definiens: ( as defined below ) equals or exceeds [COMPANY] 's commercial requirements for finished cartons of the Product ( as reflected in the first [ four ] Calendar Quarters of [COMPANY] 's most recent forecast for the Product delivered to OSG Norwich pursuant to Section 4.1 ( b ) of the Agreement, the ), [COMPANY] shall purchase at least [ 80 % ] of its Commercial Requirements for Product in the Territory during each such [ four ] Calendar Quarter period exclusively from OSG Norwich, provided that, : ( a ) without regard to the Product Manufacturing Capacity : ( i ) if OSG Norwich is unable to meet the purchase orders of [COMPANY] with respect to quantity ordered, quality of the Product and time for delivery ( assuming that such purchase orders meet the terms of this Project Agreement and the -6 - CONFIDENTIAL TREATMENT REQUESTED Master Agreement ), then [COMPANY] may obtain [ an unlimited amount ] of Product from a third person ; ( ii ) OSG Norwich acknowledges that, at any time, [COMPANY] shall have the right to qualify [ one or more ] third party suppliers to manufacture the Product and that [COMPANY] is permitted to purchase up to [ 20 % ] of its Commercial Requirements for Product in the Territory from such other third party suppliers ; and ( iii ) [COMPANY] may purchase in excess of [ 20 % ] of its Commercial Requirements for the Product from Lilly through [ September 30, 2006 ] ; and ( b ) during any period that OSG Norwich 's Product Manufacturing Capacity is less than ViroPharrna 's Commercial Requirements for the Product, [COMPANY] may submit purchase orders for Product to, or otherwise obtain Product from, a third person in an amount not to exceed [ [COMPANY] 's Commercial Requirements less the Product Manufacturing Capacity ]