(S)-4-((S)-2-Acetylamino-3-carboxy-propanoylamino)-4-((S)-1-{(S)-3-carboxy-1-[(S)-1-((R)-1-mercaptomethyl-2-oxo-ethylcarbamoyl)-2-phenyl-ethylcarbamoyl]-propylcarbamoyl}-3-methyl-butylcarbamoyl)-butyric acid AIDS-106181 AIDS106181 AcAsp-Glu-Leu-Glu-Cha(beta-cyclohexylalanine)-Cys Product-based HCV NS3 protease inhibitor