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 documenting that all Ingredients are at or below no significant risk levels and no observable effect levels, as applicable. 2.2 Supplier shall develop and maintain a food safety/food defense program as required under the Food Safety Modernization Act 21 USC §301 et seq and shall submit a copy of such plan (and any changes thereto) to PNC upon PNC's request. Supplier will conduct [***] third-party food safety/food defense audits (the "Audits") in compliance with, and consistent with, relevant audit schemes approved by the Global Food Safety Initiatives, AIB International, Silliker, or GMA SAFE. Supplier will submit summaries of audit reports to PNC's Quality Manager at [***] upon request. Failure to comply with the requirements of this Section 2.2 will constitute a material breach of this Agreement. 2.3 Supplier will notify PNC immediately, by person-to-person voice communication or equivalent means, if any of the Ingredients contain, or are reasonably suspected to contain, material hazardous to human health, including but not limited to, chemical, physical or biological hazards. 2.4 PNC shall notify Supplier in writing if it determines any Ingredient fails to meet the Specifications. Supplier shall be given an opportunity to and will promptly inspect and/or test such Ingredients to confirm compliance to Specification. If after any reasonable, good faith inspection and testing it is confirmed that certain Ingredients fail to meet the Specifications [***]. 2.5 Subject to the occurring of a Force Majeure Event, if Supplier fails to deliver the Ingredients in accordance with the Specifications, including within the time specified on the Purchase Order, in addition to any other remedies available, PNC may terminate the Purchase Order in whole or in part. In the event of such a termination, Supplier shall continue performance of any nonterminated portion of the Purchase Order, or any nonterminated Purchase Orders, and the quantity of Ingredient ordered and so terminated shall be deducted against any relevant Master Purchase Commitment. 2.6 PNC or its contracted third-party auditors may enter and audit/inspect Supplier's facilities where the Ingredients are produced, stored, packaged or otherwise processed [***] unless food safety is at issue or PNC has a good faith reason to believe the Ingredients are being stored, packaged, or processed 3 in a way that is inconsistent with the Specifications, in which case an audit may be performed at any time during the Term. For routine visits and audits, PNC will provide [***] if facilities located in the US and with [***] if facilities are located [***], provided that such examination will be conducted during Supplier's normal business hours and in such a manner as to reasonably minimize disruption to Supplier's business, unless food safety is at issue, in which case such examination may be conducted at any time. Supplier shall cooperate in good faith with PNC during all such inspections. During qualification processes and on-site inspections, Supplier will present necessary documentation to ensure compliance with all applicable programs specified under 21 CFR Part 117 Current Good Manufacturing Practice, Hazard Analysis, and Risk-Based Preventative Controls for Human Food. Records of environmental monitoring activities by the Supplier, following Supplier's established environmental monitoring program and standard operating procedures will be made available upon request to PNC. Supplier will notify Buyer immediately via person-to- person voice communication in the event that any pathogen is found, or reasonably suspected, in the plant environment during any environmental monitoring activity that could have an impact on the quality or safety of PNC's Ingredients. In the event of an actual or suspected food safety concern, Supplier shall conduct sampling in all relevant areas and promptly provide results of such tests to PNC. If PNC or its representatives find that any of Supplier's facilities, processes, inventory, procedures or equipment are not in accordance or compliance with the requirements of this Agreement or applicable law or regulation, PNC will give notice to Supplier, and Supplier shall promptly take all reasonable steps to correct such deficiency as soon as possible. If correction of the deficiency cannot be affected within [***] of such notice, then Supplier shall promptly notify PNC with its plan to correct the deficiency including an estimated schedule. If the deficiency cannot be corrected within [***], unless otherwise agreed, then PNC shall have the right to terminate any Purchase Orders then outstanding, along with any Master Purchase Commitment related thereto. 3 Business Continuity/Continuous Supply Assurances. Supplier will develop and maintain a business continuity plan that identifies critical pathways and potential crisis situations that could interrupt the supply of Ingredients to PNC and establish contingency plans
"""

Extract the exact clause related to "Irrevocable Or Perpetual License" from the excerpt above.

assistant: Not found.