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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disclosure will not be required when a party is ordered to disclose information concerning the Agreement by a competent tribunal or such disclosures are required by law, regulation, or stock exchange rules, except that such party shall make all reasonable efforts to limit any disclosure as may be required in the course of legal proceedings by entry of an appropriate protective and confidentiality order, and shall provide the other party with as much advance notice of such circumstances as is reasonably practical. 5.9. Return of Materials. Any materials or documents which have been furnished by a disclosing party to a receiving party will be promptly returned, accompanied by all copies thereof, or certified as destroyed upon request by the disclosing party following termination of this Agreement, except that a party may retain one copy solely for reference to comply with regulatory or other legal requirements, subject to the obligations of confidentiality herein. 6. PAYMENT AND ACCOUNTING. 6.1. Payment Terms and Reports. Payments due under Section 2.2 shall be payable to PcoMed by Integra on a quarterly basis within 45 days following the end of each calendar quarter. Each such payment shall be accompanied by a statement setting forth in reasonable detail (i) the number and type of Treated Integra Product and Partially Treated Integra Product sold and the Net Sales applicable thereto, (ii) a breakdown of all the components of Net Sales for the determination of payments due under Sections 2.2 (the numbers may be and type of products may be stated in the aggregate and not by customer and are not required to be detailed by geographic area unless Fee rates are different in different geographic areas). Treated Integra Product and/or Partially Treated Integra Product shall be considered as being sold for the purpose of the calculation of payments due under Sections 2.2 when the payments for the Treated Integra Product and/or Partially Treated Integra Product are received by Integra or its Affiliates from a Third Party. All payments to be made under this Agreement shall be paid in United States dollars. Net Sales of Treated Integra Product and/or Partially Treated Integra Product and fees in currencies other than United States dollars shall be first determined in the currency of the country in which they are earned and shall be converted (for the purpose of calculation only) in accordance with generally accepted accounting principles for financial reporting in the United States. 6.2. Records and Audits. Integra shall keep and maintain accurate records and documentation pertaining to Net Sales of Treated Integra Product in sufficient detail to permit PcoMed to calculate payments due hereunder. Integra shall retain such records and documentation for a period that is consistent with its Records Retention Policy. Such records and documentation will be available for inspection during such period by an independent certified public accountant selected by PcoMed and reasonably acceptable to Integra, solely for the purpose of verifying the payments made by Integra under this Agreement. Said accountant shall enter into a confidentiality agreement with Integra and shall not disclose to PcoMed any information except that which is necessary to determine whether PcoMed has received all amounts due to it from Integra. Such inspections shall be made no more than once each calendar year during ordinary business hours and on reasonable prior notice and shall be at PcoMed's sole cost and expense. PcoMed shall report the results of any such audit to Integra within 60 days of completion and provide a copy of such audit 11 to Integra. The results of any such audit shall be the Confidential Information of Integra. To the extent that such audit reveals any underpayments by Integra, Integra shall pay to PcoMed the amount of shortfall within 60 days from the date on which the parties actually agreed on the amount of the shortfall, or, in the event the parties do not reach agreement on the shortfall, the date a court issues a judgment finally resolving the matter. 6.3. Taxes. PcoMed shall pay any and all taxes levied on account of payments it receives under this Agreement. Integra shall pay, or cause to be paid, any and all taxes required to be paid or withheld on any Sales, supply or other transfers for value of Treated Integra Product and/or Partially Treated Integra Product (other than taxes imposed on the income or revenues of PcoMed). All amounts due hereunder shall be without deduction of exchange, collection or other charges, provided that if Integra is required to withhold and pay on
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Extract the exact clause related to "Expiration Date" from the excerpt above.