1-({1-[2-(2-{(2R)-2-[(2S)-2-(Acetylamino)-3-carboxypropanoylamino]-4-carboxybutanoylamino}(2S)-2-cyclohexylacetylamino)(2S)-3-methylbutanoyl](2R,4R)-4-(2-naphthylmethoxy)pyrrolidin-2-yl}carbonylamino)cyclopropanecarboxylic acid AIDS-097720 AIDS097720 HCV NS3 protease inhibitor derived from substrate