Exhibit 31.2



[U.S. Bank National Association letterhead]



ABS ANNUAL REPORT BACKUP CERTIFICATION

Reference is made to the
Trust Agreement, between MS Structured Asset Corp., as Depositor and U.S. Bank National Association, as Trustee, as successor-in-interest
to Bank of America, National Association, as Trustee, as successor by merger to LaSalle Bank National Association, as Trustee,
for SATURNS Trust No. 2007-1, dated March 1, 2007, together with Schedules I, II and III attached thereto, and the Standard Terms
for Trust Agreements, between MS Structured Asset Corp., as Depositor and U.S. Bank National Association, as Trustee, as successor-in-interest
to Bank of America, National Association, as Trustee, as successor by merger to LaSalle Bank National Association, as Trustee
dated April 13, 2006. Capitalized terms used herein and not defined shall have the meanings defined in the Trust Agreement
and the Standard Terms for Trust Agreements.



In connection with the preparation and delivery of the annual report on Form 10-K of MS Structured Asset Corp. on behalf of
SATURNS Trust No. 2007-1 for the fiscal year ending December 31, 2017 ("Fiscal Year") and the certifications given by In-Young
Chase with respect thereto, the undersigned hereby certifies that she is a duly elected Senior Vice President of U.S. Bank
National Association (the "Trustee") and further certifies in her capacity as such as follows:

| | 1. | U.S. Bank National Association has prepared all reports to Unitholders
with respect to each distribution date for SATURNS Trust No. 2007-1 and, if permitted under the applicable rules and regulations
of the Securities Exchange Commission and the procedures with respect thereto that have been mutually agreed upon by MS Structured
Asset Corp. and U.S. Bank National Association, has filed a copy of such reports on Form 10-D for the months listed on Exhibit
A hereto;
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| | 2. | I (or officers under my supervision) have reviewed the reports on Form 10-D containing the reports
to Unitholders included on Exhibit A filed in respect of periods included in the Fiscal Year covered by the annual report of MS
Structured Asset Corp. on behalf of SATURNS Trust No. 2007-1;
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 3. | I am familiar with the operations of U.S. Bank National Association
with respect to the SATURNS program and SATURNS Trust No. 2007-1 and the requirements imposed by the Trust Agreement;
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 4. | Based on my knowledge, the information in the reports to Unitholders,
taken as a whole, does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements were made, not misleading as
of the date that the distribution information was filed on Form 10-D;
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 5. | Based on my knowledge, the information required to be provided under
the Trust Agreement, for inclusion in the reports to Unitholders, is included in the
reports to Unitholders;
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

















| | 6. | Based on my knowledge, and except as disclosed in the reports
to Unitholders, the Trustee has fulfilled its obligations under the Trust Agreement in all material respects;
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | 7. | Based on my knowledge, and except as disclosed in the reports to Unitholders, there are no material
legal proceedings with respect to the trust, involving the trust or U.S. Bank National Association as Trustee.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



U.S. Bank National Association as successor-in-interest
to Bank of America, National Association as successor by merger to LaSalle Bank National Association, as Trustee



By: /s/ Kimberly
O. Jacobs

Name:	Kimberly
O. Jacobs

Title:	Senior Vice
President

Date: March 8, 2018



























Exhibit A

|SATURNS Trust No.: | Closing Date  | Payment Dates                           | Form 10-D Filing Dates                   
|------------------ | ------------- | --------------------------------------- | -----------------------------------------
|2007-1             | March 1, 2007 | March 1, 2017
        September 1, 2017 | March 10, 2017
        September 14, 2017