Common use of Agreement to Purchase Clause in Contracts

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 (the “Wachovia Mortgage Loan Balance”) (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23, 2007, or such other date as shall be mutually acceptable to the parties to this Agreement (the “Closing Date”). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 301,233,846 (the “Wachovia "PNC Bank Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia PNC Bank Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,737,992,952 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23June 29, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39103.5079% of the Wachovia PNC Bank Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7671,259,951, which amount represents the amount of interest accrued on the Wachovia PNC Bank Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date. The Purchaser hereby directs the Seller to deliver, and the Seller shall deliver, the Closing Date Deposit (in the amount of $218,782.09) to the Master Servicer on the Closing Date. The Closing Date Deposit shall be delivered to the account specified by the Master Servicer by wire transfer of immediately available funds.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 175,769,366 (the “Wachovia "Bank of America Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Bank of America Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 979,850,322 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 236, 2007, 2004 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39101.4330% of the Wachovia Bank of America Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,767134,825, which amount represents the amount of interest accrued on the Wachovia Bank of America Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 116,393,908 (the “Wachovia "KeyBank Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia KeyBank Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 979,850,322 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 236, 2007, 2004 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39100.9775% of the Wachovia KeyBank Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,76788,254, which amount represents the amount of interest accrued on the Wachovia KeyBank Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 456,814,657 (the “Wachovia "Countrywide Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Countrywide Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,737,992,952 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23June 29, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39105.1066% of the Wachovia Countrywide Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7671,981,649, which amount represents the amount of interest accrued on the Wachovia Countrywide Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date. The Purchaser hereby directs the Seller to deliver, and the Seller shall deliver, the Closing Date Deposit (in the amount of $8,444.76) to the Master Servicer on the Closing Date. The Closing Date Deposit shall be delivered to the account specified by the Master Servicer by wire transfer of immediately available funds.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to accepted by the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to will have an aggregate principal balance of $4,136,224,533 429,325,551 (the “Wachovia Mortgage Loan "Initial UBS Pool Balance”) (subject to a variance of plus or minus 5.0%") as of the close of business on the Cut-Off off Date, after giving effect to any and all payments of principal due thereon on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23December 2, 2007, 2004 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be consist of: (A) a cash amount equal to a percentage (imutually agreed upon by the parties hereto) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off DateInitial UBS Pool Balance, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia each Mortgage Loan Balance at the related Net Mortgage Rate (net of the related Administrative Cost Rate), for the period from and including the Cut-Off Date November 23, 2004 up to but not including the Closing Date. The Aggregate Purchase Price , which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds (or by such other method as shall be mutually acceptable to the parties hereto) on the Closing Date; and (B) a 32.74083% Percentage Interest in each Class of Residual Interest Certificates (all such Residual Interest Certificates, the "Seller's Residual Interest Certificates").

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 979,944,449 (the “Wachovia "Merrill Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Merrill Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,737,992,952 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23June 29, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39102.9496% of the Wachovia Merrill Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7673,999,190, which amount represents the amount of interest accrued on the Wachovia Merrill Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date. The Purchaser hereby directs the Seller to deliver, and the Seller shall deliver, the Closing Date Deposit (in the amount of $365,172.54) to the Master Servicer on the Closing Date. The Closing Date Deposit shall be delivered to the account specified by the Master Servicer by wire transfer of immediately available funds.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 889,016,935 (the “Wachovia Nomura Mortgage Loan Balance”) (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Nomura Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23, 2007, or such other date as shall be mutually acceptable to the parties to this Agreement (the “Closing Date”). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be equal to (i) 100.39100.76% of the Wachovia Nomura Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7673,245,254, which amount represents the amount of interest accrued on the Wachovia Nomura Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 687,687,048 (the “Wachovia "Merrill Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Merrill Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 979,850,322 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 236, 2007, 2004 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39102.5035% of the Wachovia Merrill Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,767526,730, which amount represents the amount of interest accrued on the Wachovia Merrill Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to accepted by the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to will have an aggregate principal balance of $4,136,224,533 768,227,117 (the “Wachovia Mortgage Loan "Initial UBS Pool Balance”) (subject to a variance of plus or minus 5.0%") as of the close of business on the Cut-Off off Date, after giving effect to any and all payments of principal due thereon on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23November 4, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be consist of: (A) a cash amount equal to a percentage (imutually agreed upon by the parties hereto) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off DateInitial UBS Pool Balance, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia each Mortgage Loan Balance at the related Net Mortgage Rate (net of the related Administrative Cost Rate), for the period from and including the Cut-Off Date October 11, 2005 up to but not including the Closing Date. The Aggregate Purchase Price , which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds (or by such other method as shall be mutually acceptable to the parties hereto) on the Closing Date; and (B) a 32.84959% Percentage Interest in each Class of Residual Interest Certificates (all such Residual Interest Certificates, the "Seller's Residual Interest Certificates").

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 820,226,763 (the “Wachovia BCRE Mortgage Loan Balance”) (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia BCRE Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23, 2007, or such other date as shall be mutually acceptable to the parties to this Agreement (the “Closing Date”). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be equal to (i) 100.39102.54% of the Wachovia BCRE Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7673,135,374, which amount represents the amount of interest accrued on the Wachovia BCRE Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 1,625,096,687 (the “Wachovia Mortgage Loan Balance”) (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 2,001,923,624 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23March 30, 20072006, or such other date as shall be mutually acceptable to the parties to this Agreement (the “Closing Date”). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7677,186,508, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing DateDate but does not include any deduction for any fees and/or expenses incurred in connection with this transaction. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 947,241,670 (the “Wachovia "Countrywide Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Countrywide Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,841,447,787 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23June 28, 2007, 2006 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.3998.96775% of the Wachovia Countrywide Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7674,201,331, which amount represents the amount of interest accrued on the Wachovia Countrywide Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 512,500,000 (the “Wachovia "IXIS Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia IXIS Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 4,522,709,155 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23December 12, 2007, 2006 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39105.7678% of the Wachovia IXIS Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,767937,993, which amount represents the amount of interest accrued on the Wachovia IXIS Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to accepted by the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to will have an aggregate principal balance of $4,136,224,533 516,283,002 (the “Wachovia Mortgage Loan "Initial UBS Pool Balance”) (subject to a variance of plus or minus 5.0%") as of the close of business on the Cut-Off off Date, after giving effect to any and all payments of principal due thereon on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23August 24, 2007, 2004 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be consist of: (A) a cash amount equal to a percentage (imutually agreed upon by the parties hereto) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off DateInitial UBS Pool Balance, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia each Mortgage Loan Balance at the related Net Mortgage Rate (net of the related Administrative Cost Rate), for the period from and including the Cut-Off Date August 11, 2004 up to but not including the Closing Date. The Aggregate Purchase Price , which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds (or by such other method as shall be mutually acceptable to the parties hereto) on the Closing Date; and (B) a 61.657974% Percentage Interest in each Class of Residual Interest Certificates (all such Residual Interest Certificates, the "Seller's Residual Interest Certificates").

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 2,440,050,296 (the “"Wachovia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 3,079,909,568 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May August 23, 20072006, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7679,412,716, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing DateDate but does not reflect any deduction for any fees and/or expenses incurred in connection with this transaction. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 242,927,712 (the “Wachovia "Bank of America Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Bank of America Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 948,772,134 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23June 12, 2007, 2008 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.3995.361513382% of the Wachovia Bank of America Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,767460,118.12, which amount represents the amount of interest accrued on the Wachovia Bank of America Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 170,856,104 (the “Wachovia "Artesia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Artesia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 2,063,442,241 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23January 27, 20072005, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Artesia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767661,567, which amount represents the amount of interest accrued on the Wachovia Artesia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 639,859,272 (the “Wachovia "Nomura Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Nomura Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 3,079,909,568 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May August 23, 20072006, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Nomura Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7672,462,554, which amount represents the amount of interest accrued on the Wachovia Nomura Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing DateDate but does not reflect any deduction for any fees and/or expenses incurred in connection with this transaction. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 1,190,758,018 (the “Wachovia "Countrywide Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Countrywide Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 2,809,835,146 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23November 14, 2007, 2007 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39approximately 100.49452% of the Wachovia Countrywide Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7672,653,881.35, which amount represents the amount of interest accrued on the Wachovia Countrywide Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 201,543,913 (the “Wachovia "LaSalle Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia LaSalle Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 728,324,739 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23February 25, 2007, 2002 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39103.61% of the Wachovia LaSalle Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767966,197, which amount represents the amount of interest accrued on the Wachovia LaSalle Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 402,050,377 (the “Wachovia "IXIS Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia IXIS Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 4,417,019,866 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23March 14, 2007, 2007 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39103.48103% of the Wachovia IXIS Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,767891,102, which amount represents the amount of interest accrued on the Wachovia IXIS Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 601,104,228 (the “Wachovia "First Union Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia First Union Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 978,559,069 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23December 20, 2007, 2001 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”") for the Mortgage Loans shall be equal to (A) (i) 100.39102.36% of the Wachovia First Union Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7672,261,575, which amount represents the amount of interest accrued on the Wachovia First Union Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date, less (B) the principal amounts or percentage interests of the Certificates set forth on Exhibit B attached hereto (collectively, the "Retained Certificates"). The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 2,937,164,689 (the “"Wachovia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 3,663,837,892 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May August 23, 20072005, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7679,620,846, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 406,157,047 (the “Wachovia "KeyBank Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia KeyBank Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,841,447,787 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23June 28, 2007, 2006 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.3997.78243% of the Wachovia KeyBank Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7671,747,597, which amount represents the amount of interest accrued on the Wachovia KeyBank Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date. The Purchaser hereby directs the Seller to deliver, and the Seller shall deliver, the Closing Date Deposit (in the amount of $101,620) to the applicable Master Servicer on the Closing Date. The Closing Date Deposit shall be delivered to the account specified by the applicable Master Servicer by wire transfer of immediately available funds.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 639,286,752 (the “Wachovia "Nomura Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Nomura Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 3,602,123,586 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23August 22, 2007, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Nomura Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7672,247,264, which amount represents the amount of interest accrued on the Wachovia Nomura Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 451,866,776 (the “"Wachovia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,082,600,757 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23July 11, 2007, 2002 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”") for the Mortgage Loans shall be equal to (A) (i) 100.39107.64% of the Wachovia Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,767927,714, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date, less (B) the principal amounts or percentage interests of the Certificates set forth on Exhibit B attached hereto (collectively, the "Retained Certificates"). The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 1,614,545,341 (the “Wachovia Mortgage Loan Balance”) (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23June 30, 20072005, or such other date as shall be mutually acceptable to the parties to this Agreement (the “Closing Date”). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be equal to (i) 100.39103.54% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7676,882,191, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 462,636,009 (the “"Wachovia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 875,069,993 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23November 12, 2007, 2002 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39__% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767909,330, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 285,207,152 (the “Wachovia "Nomura Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Nomura Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 937,264,149 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23February 11, 2007, 2003 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39______% of the Wachovia Nomura Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767511,350, which amount represents the amount of interest accrued on the Wachovia Nomura Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 104,631,897 (the “Wachovia "Artesia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Artesia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 950,042,448 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23, 2007, 2002 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Artesia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767481,600, which amount represents the amount of interest accrued on the Wachovia Artesia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 1,387,144,690 (the “Wachovia "Countrywide Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Countrywide Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 4,417,019,866 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23March 14, 2007, 2007 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39102.87700% of the Wachovia Seller Mortgage Loan Balance as of the Cut-Off Cut off Date, plus (ii) $14,917,7673,030,192, which amount represents the amount of interest accrued on the Wachovia Seller Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 184,895,004 (the “Wachovia "LaSalle Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia LaSalle Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 818,834,218 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23August 21, 2007, 2001 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39103.26% of the Wachovia LaSalle Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767789,047, which amount represents the amount of interest accrued on the Wachovia LaSalle Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 208,572,431 (the “Wachovia "Eurohypo Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Eurohypo Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 974,238,294 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23November 25, 20072003, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39______% of the Wachovia Eurohypo Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767621,370, which amount represents the amount of interest accrued on the Wachovia Eurohypo Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing DateDate to an account designated by the Seller.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 278,709,450 (the “Wachovia Artesia Mortgage Loan Balance”) (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Artesia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 3,275,616,483 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23October 27, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement (the “Closing Date”). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be equal to (i) 100.3999.43% of the Wachovia Artesia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7671,116,876, which amount represents the amount of interest accrued on the Wachovia Artesia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 139,726,666 (the “Wachovia "Citigroup Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Citigroup Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 1,076,652,064 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23July 8, 20072004, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Citigroup Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767148,150, which amount represents the amount of interest accrued on the Wachovia Citigroup Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 513,659,100 (the “Wachovia "First Union Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia First Union Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 818,834,218 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23August 21, 2007, 2001 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”") for the Mortgage Loans shall be equal to (A) (i) 100.39102.77% of the Wachovia First Union Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7672,175,971, which amount represents the amount of interest accrued on the Wachovia First Union Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date, less (B) the principal amounts or percentage interests of the Certificates set forth on Exhibit B attached hereto (collectively, the "Retained Certificates"). The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 150,833,852 (the “Wachovia "Artesia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Artesia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 1,076,652,064 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23July 8, 20072004, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Artesia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767168,240, which amount represents the amount of interest accrued on the Wachovia Artesia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to accepted by the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to will have an aggregate principal balance of $4,136,224,533 528,429,818.31 (the “Wachovia Mortgage Loan "Initial Pool Balance”) (subject to a variance of plus or minus 5.0%") as of the close of business on December 11, 2000 (the "Cut-Off off Date"), after giving effect to any and all payments of principal due thereon on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23December 21, 2007, 2000 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be consist of: (A) a cash amount equal to (i) 100.39106.82986% of the Wachovia Mortgage Loan Balance as of the Cut-Off DateInitial Pool Balance, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia each Mortgage Loan Balance at the related Net Mortgage Rate Rate, for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price , which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds (or by such other method as shall be mutually acceptable to the parties hereto) on the Closing Date; and (B) Certificates representing a 52.992% Percentage Interest in each Class of Residual Interest Certificates (such Certificates, the "Seller's Residual Interest Certificates").

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 117,192,322 (the “Wachovia "Artesia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Artesia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 875,069,993 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23November 12, 2007, 2002 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39__% of the Wachovia Artesia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767216,653, which amount represents the amount of interest accrued on the Wachovia Artesia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 1,607,475,670 (the “Wachovia "GACC Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia GACC Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 3,878,244,727 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23November 15, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be consist of an amount equal to (i) 100.3998.6289% of the Wachovia GACC Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7673,097,606, which amount represents the amount of interest accrued on the Wachovia GACC Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 897,454,002 (the “Wachovia "Nomura Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Nomura Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 4,229,859,030 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23March 7, 20072006, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Nomura Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767838,472, which amount represents the amount of interest accrued on the Wachovia Nomura Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 423,678,518 (the “Wachovia "KeyBank Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia KeyBank Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 2,435,364,704 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23August 28, 2007, 2007 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.3995.75401224042600% of the Wachovia KeyBank Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7671,864,939, which amount represents the amount of interest accrued on the Wachovia KeyBank Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 203,248,680 (the “Wachovia Mortgage "KeyBankMortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia KeyBank Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,055,546,925 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23November 20, 2007, 2003 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”") for the Mortgage Loans shall be equal to (A) (i) 100.39101.47516% of the Wachovia KeyBank Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,767600,758, which amount represents the amount of interest accrued on the Wachovia KeyBank Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date, less (B) the principal amounts or percentage interests of the Certificates set forth on Exhibit B attached hereto (collectively, the "Retained Certificates"). The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 506,080,226 (the “Wachovia "Eurohypo Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Eurohypo Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 2,809,835,146 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23November 14, 2007, 2007 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39approximately 101.00766% of the Wachovia Eurohypo Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7671,170,017.73, which amount represents the amount of interest accrued on the Wachovia Eurohypo Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 671,952,013 (the “"Wachovia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 1,200,914,923 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23July 1, 20072003, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39109.4702% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767748,230, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 219,908,499 (the “Wachovia "KeyBank Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia KeyBank Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,115,140,373 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23September 29, 2007, 2004 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39104.4634% of the Wachovia KeyBank Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,767954,565, which amount represents the amount of interest accrued on the Wachovia KeyBank Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 144,442,493 (the “Wachovia "Nomura Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Nomura Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 891,768,535 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23April 10, 20072003, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Nomura Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767205,700, which amount represents the amount of interest accrued on the Wachovia Nomura Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 90,062,720 (the “Wachovia "Artesia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Artesia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 1,041,488,309 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23April 30, 20072004, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Artesia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767384,257, which amount represents the amount of interest accrued on the Wachovia Artesia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 724,539,913 (the “Wachovia "Merrill Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Merrill Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,137,261,494 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23March 29, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39101.3477% of the Wachovia Merrill Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7673,215,777, which amount represents the amount of interest accrued on the Wachovia Merrill Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 100,299,217 (the “Wachovia "Citigroup Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Citigroup Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 1,290,099,569 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23February 26, 2007, 2004 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Citigroup Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767406,562, which amount represents the amount of interest accrued on the Wachovia Citigroup Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance as of $4,136,224,533 the close of business on the Cut-off Date (the “Wachovia "Seller Mortgage Loan Balance”") of $338,918,899 (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date), after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Seller Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 6,599,815,279 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23March 29, 2007, 2007 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal consist of a cash amount, payable in immediately available funds, as reflected on the settlement statement agreed to (i) 100.39% of by the Wachovia Mortgage Loan Balance as of Seller and the Cut-Off Date, plus (ii) $14,917,767Purchaser, which amount represents the amount of shall include interest accrued on the Wachovia Seller Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 630,733,981 (the “Wachovia "Merrill Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Merrill Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,082,600,757 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23July 11, 2007, 2002 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”") for the Mortgage Loans shall be equal to (A) (i) 100.39108.78% of the Wachovia Merrill Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7671,323,041, which amount represents the amount of interest accrued on the Wachovia Merrill Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date, less (B) the principal amounts or percentage interests of the Certificates set forth on Exhibit B attached hereto (collectively, the "Retained Certificates"). The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 [_________] (the “Wachovia [_________] Mortgage Loan Balance”) (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia [_________] Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 [_________] (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23, 2007[_________], or such other date as shall be mutually acceptable to the parties to this Agreement (the “Closing Date”). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be equal to (i) 100.39[_________]% of the Wachovia [_________] Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767[_________], which amount represents the amount of interest accrued on the Wachovia [_________] Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 427,030,979 (the “"Wachovia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 950,042,448 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23, 2007, 2002 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (A) (i) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7671,928,880, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date, less (B) the principal amounts or percentage interests of the Certificates set forth on Exhibit B attached hereto (collectively, the "Retained Certificates"). The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 130,665,716.24 (the “Wachovia "Eurohypo Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Eurohypo Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 1,149,211,695 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May December 23, 20072003, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Eurohypo Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767361,820, which amount represents the amount of interest accrued on the Wachovia Eurohypo Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing DateDate to an account designated by the Seller.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 84,882,959 (the “Wachovia "Eurohypo Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Eurohypo Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 1,041,488,309 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23April 30, 20072004, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Eurohypo Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767343,078, which amount represents the amount of interest accrued on the Wachovia Eurohypo Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to accepted by the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to will have an aggregate principal balance of $4,136,224,533 641,627,194 (the “Wachovia Mortgage Loan "Initial Pool Balance”) (subject to a variance of plus or minus 5.0%") as of the close of business on May 11, 2001 (the "Cut-Off off Date"), after giving effect to any and all payments of principal due thereon on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 2324, 2007, 2001 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be consist of: (A) a cash amount equal to (i) 100.39103.37433% of the Wachovia Mortgage Loan Balance as of the Cut-Off DateInitial Pool Balance, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia each Mortgage Loan Balance at the related Net Mortgage Rate Rate, for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price , which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds (or by such other method as shall be mutually acceptable to the parties hereto) on the Closing Date; and (B) Certificates representing a 48.6420% Percentage Interest in each Class of Residual Interest Certificates (such Certificates, the "Seller's Residual Interest Certificates").

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 912,156,067.26 (the “Wachovia "CGMRC Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia CGMRC Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,030,490,079 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23December 22, 2007, 2004 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be consist of an amount equal to (i) 100.39105.5644% of the Wachovia CGMRC Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7673,021,686.46, which amount represents the amount of interest accrued on the Wachovia CGMRC Mortgage Loan Balance at at, in the case of the portion thereof attributable to each Mortgage Loan, the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The cash component of the Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 1,187,827,676 (the “Wachovia "MLML Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia MLML Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 2,141,833,152 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23March 30, 2007, 2006 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.3999.2307% of the Wachovia MLML Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7675,416,353, which amount represents the amount of interest accrued on the Wachovia MLML Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date. The Purchaser hereby directs the Seller to deliver, and the Seller shall deliver, (i) the Closing Date Deposit (in the amount of $62,956.78) to the Master Servicer on the Closing Date and (ii) the Additional MLMLI Deposit to the Trustee prior to the initial Distribution Date. The Closing Date Deposit and the Additional MLMLI Deposit shall be delivered to the account specified by the Master Servicer or Trustee, as applicable, by wire transfer of immediately available funds.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 145,811,942 (the “Wachovia "Nomura Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Nomura Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 950,042,448 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23, 2007, 2002 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (A) (i) 100.39% of the Wachovia Nomura Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767676,750, which amount represents the amount of interest accrued on the Wachovia Nomura Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date, less (B) the principal amounts or percentage interests of the Certificates set forth on Exhibit B attached hereto (collectively, the "Retained Certificates"). The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 111,611,507 (the “Wachovia "Artesia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Artesia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 978,559,069 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23December 20, 2007, 2001 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”") for the Mortgage Loans shall be equal to (A) (i) 100.39105.55% of the Wachovia Artesia Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,767453,487, which amount represents the amount of interest accrued on the Wachovia Artesia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date, less (B) the principal amounts or percentage interests of the Certificates set forth on Exhibit B attached hereto (collectively, the "Retained Certificates"). The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance as of $4,136,224,533 the close of business on the Cut-off Date (the “Wachovia "Seller Mortgage Loan Balance”") of $1,834,444,046 (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date), after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Seller Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 2,263,536,038 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23June 29, 2007, 2006 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal consist of a cash amount, payable in immediately available funds, as reflected on the settlement statement agreed to (i) 100.39% of by the Wachovia Mortgage Loan Balance as of Seller and the Cut-Off Date, plus (ii) $14,917,767Purchaser, which amount represents the amount of shall include interest accrued on the Wachovia Seller Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to accepted by the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to will have an aggregate principal balance of $4,136,224,533 878,046,090 (the “Wachovia Mortgage Loan "Initial UBS Pool Balance”) (subject to a variance of plus or minus 5.0%") as of the close of business on the Cut-Off off Date, after giving effect to any and all payments of principal due thereon on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23April 20, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be consist of: (A) a cash amount equal to a percentage (imutually agreed upon by the parties hereto) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off DateInitial UBS Pool Balance, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia each Mortgage Loan Balance at the related Net Mortgage Rate (net of the related Administrative Cost Rate), for the period from and including the Cut-Off Date April 11, 2005 up to but not including the Closing Date. The Aggregate Purchase Price , which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds (or by such other method as shall be mutually acceptable to the parties hereto) on the Closing Date; and (B) a 39.36390% Percentage Interest in each Class of Residual Interest Certificates (all such Residual Interest Certificates, the "Seller's Residual Interest Certificates").

Agreement to Purchase. (a) The Seller agrees to sell, and the Purchaser agrees to purchase, the Xxxxxx Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Xxxxxx Mortgage Loans are expected to will have an aggregate principal balance of $4,136,224,533 1,729,671,085.00 (the “Wachovia Mortgage Loan "Xxxxxx Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, date whether or not such payments are received. The Wachovia Mortgage Loan Xxxxxx Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to shall equal an aggregate principal balance (the “Cut-Off Date "Initial Pool Balance”") of $5,845,468,231 3,408,048,239 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Xxxxxx Mortgage Loans shall take place on May 2328, 2007, 1998 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration for the Xxxxxx Mortgage Loans shall consist of a cash amount equal to $1,774,790,381 (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be (which is equal to (i) 100.39% of the Wachovia Mortgage Loan Xxxxxx Balance as of the Cut-Off Date, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Xxxxxx Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price Date less fees and expenses payable by the Seller) which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date. The Purchaser will assign to the Trustee, all of its right, title and interest in and to the Xxxxxx Mortgage Loans.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 874,784,080 (the “Wachovia "MLML Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia MLML Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 2,435,364,704 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23August 28, 2007, 2007 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.3998.47608631698830% of the Wachovia MLML Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7674,126,901, which amount represents the amount of interest accrued on the Wachovia MLML Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 889,005,476 (the “Wachovia "Countrywide Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Countrywide Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 2,141,833,152 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23March 30, 2007, 2006 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.3999.9066% of the Wachovia Countrywide Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7674,159,702, which amount represents the amount of interest accrued on the Wachovia Countrywide Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to accepted by the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to will have an aggregate principal balance of $4,136,224,533 588,698,889 (the “Wachovia Mortgage Loan "Initial UBS Pool Balance”) (subject to a variance of plus or minus 5.0%") as of the close of business on the Cut-Off off Date, after giving effect to any and all payments of principal due thereon on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23February 10, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be consist of: (A) a cash amount equal to a percentage (imutually agreed upon by the parties hereto) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off DateInitial UBS Pool Balance, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia each Mortgage Loan Balance at the related Net Mortgage Rate (net of the related Administrative Cost Rate), for the period from and including the Cut-Off Date January 11, 2005 up to but not including the Closing Date. The Aggregate Purchase Price , which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds (or by such other method as shall be mutually acceptable to the parties hereto) on the Closing Date; and (B) a 100% Percentage Interest in the Class R-LR Certificates and a 42.87812% Percentage Interest in each other Class of Residual Interest Certificates (all such Residual Interest Certificates, the "Seller's Residual Interest Certificates").

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 993,436,426 (the “"Wachovia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 1,097,030,350 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23August 25, 20072004, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39103.33% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7673,764,349, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 69,728,090 (the “Wachovia "CWCMSI Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia CWCMSI Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 2,862,422,428 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 2331, 20072006, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia CWCMSI Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767354,471, which amount represents the amount of interest accrued on the Wachovia CWCMSI Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 796,387,881 (the “"Wachovia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 952,783,999 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23August 27, 2007, 2003 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.3998.33% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7672,983,222, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 1,394,353,351 (the “Wachovia "Countrywide Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Countrywide Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 4,522,709,155 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23December 12, 2007, 2006 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39104.5261% of the Wachovia Countrywide Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7672,520,703, which amount represents the amount of interest accrued on the Wachovia Countrywide Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 724,003,952 (the “Wachovia "BCRE Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia BCRE Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 3,602,123,586 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23August 22, 2007, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia BCRE Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7672,658,864, which amount represents the amount of interest accrued on the Wachovia BCRE Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 1,104,182,164.52 (the “Wachovia "CGMRC Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia CGMRC Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,450,972,921 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23June 28, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be consist of an amount equal to (i) 100.39101.9384% of the Wachovia CGMRC Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7674,224,600.96, which amount represents the amount of interest accrued on the Wachovia CGMRC Mortgage Loan Balance at at, in the case of the portion thereof attributable to each Mortgage Loan, the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 190,966,323 (the “Wachovia "KeyBank Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia KeyBank Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,137,261,494 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23March 29, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39100.3170% of the Wachovia KeyBank Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,767812,566, which amount represents the amount of interest accrued on the Wachovia KeyBank Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date. The Purchaser hereby directs the Seller to deliver, and the Seller shall deliver, the Closing Date Deposit (in the amount of $21,925.35) to the Master Servicer on the Closing Date. The Closing Date Deposit shall be delivered to the account specified by the Master Servicer by wire transfer of immediately available funds.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 682,008,272 (the “Wachovia "CGMRC Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia CGMRC Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,185,741,012 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23June 24, 2007, 2004 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be consist of (A) an amount equal to (i) 100.3998.862% of the Wachovia CGMRC Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7672,351,741, which amount represents the amount of interest accrued on the Wachovia CGMRC Mortgage Loan Balance at at, in the case of the portion thereof attributable to each Mortgage Loan, the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date; and (B) a 100% Percentage Interest in the Class Y-I Certificates. The cash component of the Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 [_________] (the “Wachovia "[_________] Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia [_________] Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 [_________] (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23, 2007[_________], or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39[_________]% of the Wachovia [_________] Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767[_________], which amount represents the amount of interest accrued on the Wachovia [_________] Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 34,754,822 (the “Wachovia "Capmark Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Capmark Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 948,772,134 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23June 12, 2007, 2008 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.3994.979713032% of the Wachovia Capmark Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,76764,731.68, which amount represents the amount of interest accrued on the Wachovia Capmark Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 754,706,651 (the “Wachovia "Artesia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Artesia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 7,903,498,737 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23March 28, 2007, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39________% of the Wachovia Artesia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7673,405,607, which amount represents the amount of interest accrued on the Wachovia Artesia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance as of $4,136,224,533 the close of business on the Cut-off Date (the “Wachovia "Initial Aggregate Mortgage Loan Balance”") of $772,990,681 (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date), after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Initial Aggregate Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date "Initial Pool Balance”") of $5,845,468,231 1,849,908,472 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23April 25, 2007, 2008 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal consist of a cash amount, payable in immediately available funds, as reflected on the settlement statement agreed to (i) 100.39% of by the Wachovia Mortgage Loan Balance as of Seller and the Cut-Off Date, plus (ii) $14,917,767Purchaser, which amount represents the amount of shall include interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate Loans for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance as of $4,136,224,533 the close of business on the Cut-off Date (the “Wachovia "Seller Mortgage Loan Balance”") of $2,115,270,058 (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date), after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Seller Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 6,599,815,279 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23March 29, 2007, 2007 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal consist of a cash amount, payable in immediately available funds, as reflected on the settlement statement agreed to (i) 100.39% of by the Wachovia Mortgage Loan Balance as of Seller and the Cut-Off Date, plus (ii) $14,917,767Purchaser, which amount represents the amount of shall include interest accrued on the Wachovia Seller Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid reduced, with respect to the Seller or its designee Late Payment Date Loans, by wire transfer an amount equal to one month of interest payable by the related borrower, which amount shall be used to make an interest-only payment in immediately available funds on respect of such Mortgage Loan to the Closing Date.Certificateholders in April 2007. "

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 2,792,694,338 (the “"Wachovia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 2,862,422,428 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 2331, 20072006, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,76713,847,939, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 1,724,818,243 (the “Wachovia Mortgage Loan Balance”) (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 2,723,531,640 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23March 30, 20072005, or such other date as shall be mutually acceptable to the parties to this Agreement (the “Closing Date”). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be equal to (i) 100.39100.63% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7677,617,191, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 1,772,763,498 (the “Wachovia "CGMRC Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia CGMRC Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 3,878,244,727 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23November 15, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be consist of an amount equal to (i) 100.3998.4279% of the Wachovia CGMRC Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7673,345,205, which amount represents the amount of interest accrued on the Wachovia CGMRC Mortgage Loan Balance at Balance, as agreed to by the related Net Mortgage Rate for Seller and the period from and including the Cut-Off Date up to but not including the Closing DatePurchaser. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. (a) The Seller agrees to sell, and the Purchaser agrees to purchase, the CMB Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual CMB Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The CMB Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 530,134,859.35 (the “Wachovia Mortgage Loan "CMB Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, date whether or not such payments are received. The Wachovia Mortgage Loan CMB Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date "Initial Pool Balance”") of $5,845,468,231 1,181,484,821 (subject to a variance of plus or minus 5.05%). The purchase and sale of the CMB Mortgage Loans shall take place on May 2324, 2007, 1999 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the CMB Mortgage Loans shall be consist of a cash amount equal to the sum of (i) 100.39100.7991384% of the Wachovia Mortgage Loan CMB Balance as of the Cut-Off Date, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan CMB Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing DateDate in the amount of $1,432,559.32, less fees and expenses payable by the Seller. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date. The Purchaser will assign to the Trustee, all of its right, title and interest in and to the CMB Mortgage Loans.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to accepted by the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to will have an aggregate principal balance of $4,136,224,533 553,190,837 (the “Wachovia Mortgage Loan "Initial UBS Pool Balance”) (subject to a variance of plus or minus 5.0%") as of the close of business on the Cut-Off off Date, after giving effect to any and all payments of principal due thereon on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23August 25, 2007, 2005 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be consist of: (A) a cash amount equal to a percentage (imutually agreed upon by the parties hereto) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off DateInitial UBS Pool Balance, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia each Mortgage Loan Balance at the related Net Mortgage Rate (net of the related Administrative Cost Rate), for the period from and including the Cut-Off Date August 11, 2005 up to but not including the Closing Date. The Aggregate Purchase Price , which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds (or by such other method as shall be mutually acceptable to the parties hereto) on the Closing Date; and (B) a 23.59960% Percentage Interest in each Class of Residual Interest Certificates (all such Residual Interest Certificates, the "Seller's Residual Interest Certificates").

Agreement to Purchase. (a) The Seller agrees to sell, and the Purchaser agrees to purchase, the Bank of America Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Bank of America Mortgage Loans are expected to will have an aggregate principal balance of $4,136,224,533 332,234,891.37 (the “Wachovia Mortgage Loan "Bank of America Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, date whether or not such payments are received. The Wachovia Mortgage Loan Bank of America Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to shall equal an aggregate principal balance (the “Cut-Off Date "Initial Pool Balance”") of $5,845,468,231 3,408,048,239 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Bank of America Mortgage Loans shall take place on May 2328, 2007, 1998 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration for the Bank of America Mortgage Loans shall consist of a cash amount equal to $343,641,549 (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be (which is equal to (i) 100.39% the Bank of the Wachovia Mortgage Loan America Balance as of the Cut-Off Date, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Bank of America Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price Date less fees and expenses payable by Bank of America) which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date. The Purchaser will assign to the Trustee, all of its right, title and interest in and to the Bank of America Mortgage Loans.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 471,559,148 (the “"Wachovia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 891,768,535 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23April 10, 20072003, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767656,620, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 823,722,923 (the “Wachovia Nomura Mortgage Loan Balance”) (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Nomura Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 3,595,196,701 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23October 31, 20072006, or such other date as shall be mutually acceptable to the parties to this Agreement (the “Closing Date”). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be equal to (i) 100.39100.41% of the Wachovia Nomura Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,7674,142,470, which amount represents the amount of interest accrued on the Wachovia Nomura Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing DateDate but does not include any deduction for any fees and/or expenses incurred in connection with this transaction. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 653,784,974 (the “"Wachovia Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 1,076,652,064 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23July 8, 20072004, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767682,040, which amount represents the amount of interest accrued on the Wachovia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 128,083,453 (the “Wachovia "IXIS Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia IXIS Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date date, whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,242,649,660 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23November 10, 2007, 2004 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”Consideration") for the Mortgage Loans shall be equal to (i) 100.39105.52477% of the Wachovia IXIS Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,767182,698, which amount represents the amount of interest accrued on the Wachovia IXIS Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price Consideration shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 178,117,498 (the “Wachovia Artesia Mortgage Loan Balance”) (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Artesia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 1,731,843,767 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23June 29, 20072006, or such other date as shall be mutually acceptable to the parties to this Agreement (the “Closing Date”). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Artesia Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767848,035, which amount represents the amount of interest accrued on the Wachovia Artesia Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing DateDate but does not include any deduction for any fees and/or expenses incurred in connection with this transaction. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance as of $4,136,224,533 the close of business on the Cut-off Date (the “Wachovia "Seller Mortgage Loan Balance”") of $280,838,443 (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date), after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Seller Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 2,238,772,692 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23November 21, 2007, 2006 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal consist of a cash amount, payable in immediately available funds, as reflected on the settlement statement agreed to (i) 100.39% of by the Wachovia Mortgage Loan Balance as of Seller and the Cut-Off Date, plus (ii) $14,917,767Purchaser, which amount represents the amount of shall include interest accrued on the Wachovia Seller Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. (a) The Seller agrees to sell, and the Purchaser agrees to purchase, without recourse except as specifically provided herein, the Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereofLoans. (The Mortgage Loans are expected identified on the Mortgage Loan Schedule shall hereinafter be referred to as the "Daiwa Mortgage Loans.") The Daiwa Mortgage Loans will have an aggregate principal balance of $4,136,224,533 181,313,093.17 (the “Wachovia Mortgage Loan "Daiwa Balance”) (subject to a variance of plus or minus 5.0%") as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received). The Daiwa Balance, is expected to the MLMC Balance (as defined in the MLMC Agreement) and the GECA Balance (as defined in the GECA Agreement) together equal an aggregate principal balance (the “Cut-Off Date "Initial Pool Balance”") of $5,845,468,231 (subject to a variance of plus or minus 5.0%)840,787,856. The purchase and sale of the Daiwa Mortgage Loans shall take place on May 23June 26, 2007, 1997 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration (the “Aggregate Purchase Price”) for the Daiwa Mortgage Loans shall be consist of a cash amount equal to (iA) 100.39101.97% of the Wachovia Mortgage Loan Balance as of the Cut-Off DateDaiwa Balance, plus (iiB) $14,917,767, which amount represents the amount of interest accrued on the Wachovia each Daiwa Mortgage Loan Balance at the related Net Mortgage Rate Rate, for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price , which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date. The Purchaser will assign to the Trustee, all of its right, title and interest in and to the Daiwa Mortgage Loans.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to accepted by the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to will have an aggregate principal balance of $4,136,224,533 469,623,746 (the “Wachovia Mortgage Loan "Initial UBS Pool Balance”) (subject to a variance of plus or minus 5.0%") as of the close of business on June 11, 2002 (the "Cut-Off off Date"), after giving effect to any and all payments of principal due thereon on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23July 9, 2007, 2002 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be consist of: (A) a cash amount equal to (i) 100.39[_______]% of the Wachovia Mortgage Loan Balance as of the Cut-Off DateInitial UBS Pool Balance, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia each Mortgage Loan Balance at the related Net Mortgage Rate Rate, for the period from and including the Cut-Off off Date up to but not including the Closing Date. The Aggregate Purchase Price , which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds (or by such other method as shall be mutually acceptable to the parties hereto) on the Closing Date; and (B) Certificates representing a 38.80% Percentage Interest in each of the Class R-I, Class R-II and Class R-III Certificates (all such Residual Interest Certificates, the "Seller's Residual Interest Certificates").

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 163,505,074.31 (the “Wachovia "Citigroup Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Citigroup Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 1,149,211,695 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May December 23, 20072003, or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39% of the Wachovia Citigroup Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767586,460, which amount represents the amount of interest accrued on the Wachovia Citigroup Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 295,241,662 (the “Wachovia "Nomura Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Nomura Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 875,069,993 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23November 12, 2007, 2002 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39__% of the Wachovia Nomura Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767606,345, which amount represents the amount of interest accrued on the Wachovia Nomura Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the schedule (the "Mortgage Loan Schedule. ") annexed hereto as Exhibit A. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to accepted by the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to will have an aggregate principal balance of $4,136,224,533 516,747,893 (the “Wachovia Mortgage Loan "Initial UBS Pool Balance”) (subject to a variance of plus or minus 5.0%") as of the close of business on the Cut-Off off Date, after giving effect to any and all payments of principal due thereon on or before such date, whether or not such payments are received. The Wachovia Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “Cut-Off Date Pool Balance”) of $5,845,468,231 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23April 29, 2007, 2008 or such other date as shall be mutually acceptable to the parties to this Agreement hereto (the “"Closing Date”"). The consideration (the “Aggregate Purchase Price”) for the Mortgage Loans shall be consist of: (A) a cash amount equal to a percentage (imutually agreed upon by the parties hereto) 100.39% of the Wachovia Mortgage Loan Balance as of the Cut-Off DateInitial UBS Pool Balance, plus (ii) $14,917,767, which amount represents the amount of interest accrued on the Wachovia each Mortgage Loan Balance at the related Net Mortgage Rate (net of the related Administrative Cost Rate), for the period from and including the Cut-Off Date April 11, 2008 up to but not including the Closing Date. The Aggregate Purchase Price , which cash amount shall be paid to the Seller or its designee by wire transfer in immediately available funds (or by such other method as shall be mutually acceptable to the parties hereto) on the Closing Date; and (B) a 51.30992% Percentage Interest in each of the Class R-I, Class R-II and Class R-III Certificates (all such Residual Interest Certificates, the "Seller's Residual Interest Certificates").

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 156,396,118 (the “Wachovia "Citigroup Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Citigroup Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off Date Pool Balance”") of $5,845,468,231 952,783,999 (subject to a variance of plus or minus 5.0%). The purchase and sale of the Mortgage Loans shall take place on May 23August 27, 2007, 2003 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “"Aggregate Purchase Price”") for the Mortgage Loans shall be equal to (i) 100.39101.01% of the Wachovia Citigroup Mortgage Loan Balance as of the Cut-Off Date, plus (ii) $14,917,767663,429, which amount represents the amount of interest accrued on the Wachovia Citigroup Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off Date up to but not including the Closing Date. The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.

Agreement to Purchase. The Seller agrees to sell, and the Purchaser agrees to purchase, the Mortgage Loans identified on the Mortgage Loan Schedule. The Mortgage Loan Schedule may be amended to reflect the actual Mortgage Loans delivered to the Purchaser pursuant to the terms hereof. The Mortgage Loans are expected to have an aggregate principal balance of $4,136,224,533 713,275,157 (the “Wachovia "Merrill Mortgage Loan Balance”") (subject to a variance of plus or minus 5.0%) as of the close of business on the Cut-Off off Date, after giving effect to any payments due on or before such date, whether or not such payments are received. The Wachovia Merrill Mortgage Loan Balance, together with the aggregate principal balance of the Other Mortgage Loans as of the Cut-Off off Date (after giving effect to any payments due on or before such date whether or not such payments are received), is expected to equal an aggregate principal balance (the “"Cut-Off off Date Pool Balance”") of $5,845,468,231 1,055,546,925 (subject to a variance of plus or minus 5.05%). The purchase and sale of the Mortgage Loans shall take place on May 23November 20, 2007, 2003 or such other date as shall be mutually acceptable to the parties to this Agreement (the “"Closing Date”"). The consideration (the “Aggregate "Purchase Price”") for the Mortgage Loans shall be equal to (A) (i) 100.39100.84767% of the Wachovia Merrill Mortgage Loan Balance as of the Cut-Off off Date, plus (ii) $14,917,7672,018,263, which amount represents the amount of interest accrued on the Wachovia Merrill Mortgage Loan Balance at the related Net Mortgage Rate for the period from and including the Cut-Off off Date up to but not including the Closing Date, less (B) the principal amounts or percentage interests of the Certificates set forth on Exhibit B attached hereto (collectively, the "Retained Certificates"). The Aggregate Purchase Price shall be paid to the Seller or its designee by wire transfer in immediately available funds on the Closing Date.