(4R)-4-{N-[1-(N-{2-[2-(N-{[((1R)-1-Phenylethyl)amino]-N-propylcarbonylamino}carbamoyl)(2S,4R)-4-(phenylmethoxy)pyrrolidinyl](1S)-1-(methylethyl)-2-oxoethyl}carbamoyl)-2-methylbutyl]carbamoyl}-4-[(2S)-2-(acetylamino)-3-carboxypropanoylamino]butanoic acid AIDS-097719 AIDS097719 HCV NS3 protease inhibitor derived from substrate