(R)-2-[(S)-2-((S)-2-{(S)-2-[(R)-2-((S)-2-Amino-3-carboxy-propanoylamino)-4-carboxy-butanoylamino]-4-methyl-pentanoylamino}-4-carboxy-butanoylamino)-3-cyclohexyl-propanoylamino]-3-mercapto-propionic acid AIDS-106186 AIDS106186 Asp-D-Glu-Leu-Glu-Cha(beta-cyclohexylanine)-Cys Product-based HCV NS3 protease inhibitor