definiens: ( within the meaning of Treasury Regulations Section 1.445 - 2(b)(2)(iii ) ) shall provide sucha certificate and identify thereon the disregarded entity that it owns;(v ) a duly completed and accurate Internal Revenue Service Form W-8 or W‑9 for each Seller;(vi ) a fully executed wavier, pursuant to which Deerfield CSF, LLC, on behalf of itself and all its Affiliates, ( a ) waives its right toaccelerate the Deferred Payments ( as defined in the Deerfield Agreement ) as a result of the Contemplated Transactions and ( b ) acknowledges thatthe Contemplated Transactions are not an Acceleration Trigger Event ( as defined in the Deerfield Agreement ) ; and(vii ) all forecasts since the Measurement Date that are required to be delivered pursuant to or in accordance with any of the AssumedContracts