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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period of time (which shall not be less than sixty (60) days), then Sekisui shall provide Qualigen with a list of proposed remedial action items and a proposed timeframe within which to accomplish such action items. If Qualigen does not pass such audit and the reasons for such failure cannot be remedied within a reasonable period of time or Qualigen fails or elects not to complete any remedial actions reasonably suggested by Sekisui, then Sekisui's sole and exclusive remedy shall be to terminate this Agreement in accordance with the provisions of Section 14 of this Agreement, with such termination to be effective upon receipt of a termination notice by Qualigen sent by Sekisui at any time after the sixty day remedy period described in this Section 5.4 has passed. As scheduled, Sekisui may perform an audit during reasonable business hours to confirm ongoing compliance with the Quality System Regulations and confirm adequate process controls. Sekisui shall notify Qualigen at least one month in advance of a planned audit and Qualigen shall make reasonable efforts to accommodate the desired schedule. Sekisui further agrees that any information obtained from Qualigen or its Affiliates or agents in connection with any such audit shall be deemed Qualigen Confidential Information and subject to the provisions of Section 13 of this Agreement. 5.5. Technical Support. Qualigen shall provide to Sekisui and its customers commercially reasonable technical support (i) for the promotion, sale, after-sale service and support of Products sold in the Territory pursuant to this Agreement; (ii) in connection with any customer inquiries or complaints and (iii) in connection with interactions with the Regulatory Authorities. Qualigen shall be responsible for the management and costs of all such service. Qualigen shall be entitled to charge customers for, and to retain, commercially reasonable fees for service and support of out-of-warranty Instruments. 5.6. Trade Compliance. Upon execution of this Agreement, Qualigen, with Sekisui's assistance, shall provide to Sekisui the Export Commodity Control Number (ECCN) and Harmonized Tariff Codes (HTS), Country of Origin (COO), Trade Agreement Act (TAA) and Buy America Act (BAA) determinations or other relevant information for any Product supplied to Sekisui pursuant to this Agreement. 9 Source: RITTER PHARMACEUTICALS INC, S-4/A, 3/13/2020 5.7. REACH and RoHS Compliance. If any Product supplied by Qualigen is manufactured in or imported into the European Union, Qualigen shall, at its sole cost and expense, comply with applicable requirements under Regulation (EC) 1907/2006 concerning the Registration, Evaluation, Authorization and Restriction of Chemicals ("REACH"), and Directive 2011/65/EC concerning the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment ("RoHS"), each as may be amended from time to time. Upon reasonable request, Qualigen shall provide reasonable proof of compliance with REACH and RoHS, including any registration, communication, safety data sheet, chemical report, or technical or other supporting documentation. Qualigen represents and certifies that it has gathered, or will gather, the compliance documentation information with appropriate methods to ensure its accuracy and that such information is true, correct and complete to the best of its knowledge and belief as of the date that Qualigen provides its declaration. Qualigen acknowledges that Sekisui will rely on this certification in determining the compliance of the Products with REACH and RoHS. Sekisui acknowledges that Qualigen may have relied on information provided by Third Parties in completing its compliance review, and that Qualigen may not have independently verified such information, provided that Qualigen has conducted appropriate due diligence and its reliance on such Third Parties is reasonable and that Qualigen has no reason to question the reliability of such Third Parties' information and certifications. Qualigen-controlled manufacturing processes shall be in compliance with REACH and RoHS in that they do not add any substances to the resultant Product to the extent currently prohibited by REACH and RoHS. Based upon the information supplied by Third Parties along with Qualigen's knowledge of its own manufacturing processes, Qualigen will certify that, to the best of its knowledge, each of the Products identified in any certification is in compliance with the substance restrictions of REACH and RoHS or is exempt from REACH and RoHS, unless Qualigen has advised Sekisui in advance that any Product or any material incorporated into, or used to produce, any Product ("Material") do not comply with REACH or RoHS. Qualigen has processes in place to ensure proper control of Materials declarations, and segregation of ROHS- compliant and non-compliant Material within Qualigen's manufacturing processes. Qualigen shall maintain REACH and RoHS records and compliance documentation for the amount of
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Extract the exact clause related to "Irrevocable Or Perpetual License" from the excerpt above.