definiens: shall mean not more than two Compo unds from each Program — Primary or Alternate - for which a Testing Request is delivere d, none of which are a Development Candidate, which meet the following criteria : ( i ) the Compound(s ) have b een selected by [COMPANY] from the Primary Program and /or the Alternate Program, as relevant to the Testing Reque st ( assuming CFFT has not terminated the Alternate Program under the provisions of Section 10.5.3 hereof ) ; ( i i ) each Compound will be representative of those Co mpounds in each Program which [COMPANY] believes to be the mos t promising as potential Drug Products ; and ( iii ) e ach Compound shall have been previously tested by Verte x, in vitro, as to potential efficacy and potency in CF, and the results of that testing shall have been provide d to CFFT