definiens: means ( a ) any compound that [ * * * ] that is Controlled by [COMPANY] or its Affiliates either prior to theEffective Date or during the Term and/or ( b ) any salt, free acid, free base, clathrate, solvate, hydrate, hemihydrate, anhydride, ester, chelate, conformer, congener, crystal form, crystal habit, polymorph, amorphous solid, homolog, isomer, stereoisomer, enantiomer, racemate, prodrug, isotopic or radiolabeled equivalent, metabolite, conjugate, complex or mixture of any of theforegoing . For clarity, Compound includes the active pharmaceutical ingredient known as belinostat ( PXD-101 ), together withany salt, free acid, free base, clathrate, solvate, hydrate, hemihydrate, anhydride, ester, chelate, conformer, congener, crystalform, crystal habit, polymorph, amorphous solid, homolog, isomer, stereoisomer, enantiomer, racemate, prodrug, isotopic orradiolabeled equivalent, metabolite, conjugate, complex or mixture thereof ( )