Units Held Through the Depository Trust Company or a Successor Clearing Agency No Unit may be registered in the name of any person other than DTC or its nominee (or such other clearing agency registered as such pursuant to Section 17A of the Exchange Act of 1934 designated as successor to DTC by the Depositors, or the Trustee or the nominee thereof) (DTC and any such successor clearing agency are herein referred to as the "Clearing Agency") unless the Clearing Agency advises the Trustee that it is no longer willing or able properly to discharge its responsibilities with respect to the Units and the Trustee is unable to locate a qualified successor clearing agency, in which case the Trustee shall notify the Clearing Agency and instruct it to provide the Trustee with the name and address of all persons who are the beneficial owners of Units as registered on the books of the Clearing Agency (the "Owners").