system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
"""
and all exhibits thereto have been delivered by the Company to you. As used in this Agreement, "Effective Time" means the date and the time as of which each part of the registration statement on Form S-3 (File Nos. 333-172296 and 333-172296-01) (the "Latest Registration Statement") or the most recent post- effective amendment thereto, if any, became effective; "Effective Date" means the date of the Effective Time; "Preliminary Prospectus" means each prospectus included in the Latest Registration Statement, or amendments thereof, before it became effective under the Securities Act and any prospectus and prospectus supplement filed with the Commission by the Company with the consent of the Underwriters pursuant to Rule 424(a) of the Securities Act relating to the Remarketing Securities; the term "Registration Statement" means such Latest Registration Statement, as amended as of the Effective Time, including the Incorporated Documents (as defined below) and all information contained in the final prospectus relating to the Remarketing Securities filed with the Commission pursuant to Rule 424(b) of the Securities Act and deemed to be a part of such registration statement as of the Effective Time pursuant to Rule 430A or Rule 430B of the Securities Act; and "Prospectus" means the prospectus and prospectus supplement relating to the Remarketing Securities (or in the form made available to the Underwriters by the Company to meet requests of purchasers) pursuant to Rule 172 or Rule 173 of the Securities Act. For purposes of this Agreement, "free writing prospectus" has the meaning set forth in Rule 405 of the Securities Act (which does not include communications not deemed a prospectus pursuant to Rule 134 of the Securities Act and historical issuer information meeting the requirements of Rule 433(e)(2) of the Securities Act) and "Time of Sale Prospectus" means the Preliminary Prospectus together with any free writing prospectuses, if any, each identified in Schedule 1 hereto, and any other free writing prospectus that the parties hereto shall hereafter expressly agree in writing to treat as part of the Time of Sale Prospectus (except for purposes of Sections 6(c) and 6(d)), for which the term "Time of Sale Prospectus" shall not include the free writing prospectus(es) identified in Schedule 1). Reference made herein to the Preliminary Prospectus, the Prospectus or the Time of Sale Prospectus shall be deemed to refer to and include any documents incorporated by reference therein (pursuant to Item 12 of Form S-3 under the Securities Act, as of the date of the Preliminary Prospectus, the Prospectus or the Time of Sale Prospectus, as the case may be (such documents, the "Incorporated Documents")), and any reference to any amendment or supplement to the Preliminary Prospectus or the Prospectus shall be deemed to refer to and include any document filed under the Securities Exchange Act of 1934, as amended, and the rules and regulations of the Commission thereunder (collectively, the "Exchange Act") after the date of the Preliminary Prospectus, the Prospectus, or the date hereof, as the case may be, and incorporated by reference in the Preliminary Prospectus, the Prospectus or Time of Sale Prsospectus, as the case may be; and any reference to any amendment to the 6 Registration Statement shall be deemed to include the documents filed with the Commission pursuant to Section 13(a) or 15(d) of the Exchange Act after the Effective Time that is incorporated by reference in the Registration Statement. The Commission has not issued any notice of objection or any order preventing or suspending the use of any of the Preliminary Prospectus, any free writing prospectus, the Time of Sale Prospectus, the Prospectus or the Registration Statement. (b) The conditions for use of Form S-3, as set forth in the General Instructions thereto, have been satisfied or waived. (c) (i) The Registration Statement conforms, and the Prospectus and any further amendments or supplements to the Registration Statement or the Prospectus will, when they become effective or are filed with the Commission, as the case may be, conform in all material respects to the requirements of the Securities Act (including Rule 415(a) of the Securities Act), the Trust Indenture Act of 1939, as amended, and the rules and regulations promulgated thereunder ("Trust Indenture Act"); (ii) each part of the Registration Statement, as of its Effective Date and as of the date hereof, and any amendment thereto, as of the date of any such amendment, did not, does not and will not, as the case may be, contain an untrue statement of a material fact or omit to state a material
"""

Extract the exact clause related to "Source Code Escrow" from the excerpt above.