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:
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the Franchise Sales Royalty Fee shall be payable to us as if the full initial franchise fee had been paid. The Franchise Sales Royalty Fee shall be paid by you to us at the same time and in the same manner as the Unit Franchise Performance Royalty Fee provided in Section 4.2.1 above. Any Royalty Fee you collect from the Franchisee shall be immediately paid to Us, but no later than the fifteen (15 th ) day of each calendar month. A Unit Franchise shall be deemed to be sold to a Unit Franchisee on the date that you and the Unit Franchisee execute the Unit Franchise Agreement, irrespective of when the Unit Franchise begins operation. Fees and Royalties cannot be increased or decreased without our prior written consent. 4 Source: SOUPMAN, INC., 8-K, 8/14/2015 4.2.3 In addition to the Unit Franchise Performance Royalty Fee and Franchise Sales Royalty Fee described above, you shall collect from each Unit Franchisee in your Master Territory a "National Advertising Fund Contribution" to be contributed to our "National Advertising Fund" pursuant to the terms of the individual Unit Franchise Agreements. For each Unit Franchise you own and operate, you shall pay the National Advertising Fund Contribution on the same basis as Unit Franchisees. The National Advertising Fund Contribution shall be collected by you from each Unit Franchisee and spent by you in accordance with the agreement on behalf of the franchisor and Franchisees. 4.3 Manner of Payment You shall pay us all Unit Franchise Performance Royalty Fees and Franchise Sales Royalty Fees, due under this Section 4 by electronic funds transfer by us against a bank account maintained by you. You agree to execute the documents required by us, our bank and/or your bank in order to permit us to conduct electronic funds transfers to and from your account, and you shall not close your account without our prior consent. Your failure to comply with the terms of this Section 4.3 shall be deemed to be a breach of this Agreement. You hereby authorize us to initiate debit entries and/or credit collection entries to your bank account for the payment of Unit Franchise Performance Royalty Fees, Franchise Sales Royalty Fees, National Advertising Fund Contributions, and all other sums that may become due to us or our affiliates from you. You shall make funds available for withdrawal by us by electronic transfer on such dates of each month as we shall designate throughout the term of this Agreement. If you fail to provide the revenue reports described in Section 4.6 below, then in addition to the late fee described in such Section, we may debit your account for one hundred forty percent (140%) of the last Unit Franchise Performance Royalty Fee, Franchise Sales Royalty Fee and/or National Advertising Fund Contribution (as applicable) that we debited. If the Unit Franchise Performance Royalty Fee, Franchise Sales Royalty Fee and/or National Advertising Fund Contribution we debit are less than the fees you actually owe us, once we have been able to determine the true and correct revenue amounts, we will debit your account for the balance on a day we specify. If the Unit Franchise Performance Royalty Fee, Franchise Sales Royalty Fee and/or National Advertising Fund Contribution we debit are greater than the fees you actually owe us, we will credit the excess against the amount we otherwise would debit from your account for the next payment due. 4.4 Interest on Overdue Amounts Any payment not actually received by us on or before the Fifteen (15 th ) day of each month (or the next business day if the Fifteen(15 th ) of any month is not a business day) shall be deemed overdue and you shall pay to us, in addition to the overdue payment, interest on such overdue amount at the rate of one and one-half percent (1.5%) per month or the maximum rate permitted by law, whichever is less. Interest shall accrue from the original due date until payment is received in full. Our right to such interest shall be in addition to any other remedies we may have, including, without limitation, the right of set-off to withdraw or retain, from time to time and without notice to you, any amounts due and unpaid by us to you. You shall not be entitled to set-off any payments required to be made under this Section 4 against any monetary claim you may have against us. 5 Source: SOUPMAN, INC., 8-K, 8/14/2015 4.5 Late Fee; Insufficient Funds
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Extract the exact clause related to "Expiration Date" from the excerpt above.