(4S)-4-[N-((1S)-1-{N-[(1S)-1-(N-{(1S)-3-Methyl-1-[N-(3-methylbutyl)carbamoyl]butyl}carbamoyl)-3-phenylpropyl]carbamoyl}butyl)carbamoyl]-4-(phenylcarbonylamino)butanoic acid AIDS-097722 AIDS097722 HCV NS3 protease inhibitor derived from substrate