(4R)-4-(N-{(1S)-1-[N-((1S)-1-{N-[(1S)-1-(N-{(1S)-1-[N-(Phenylsulfonyl)carbamoyl]butyl}carbamoyl)-2-cyclohexylethyl]carbamoyl}-2-methylbutyl)carbamoyl]-3-methylbutyl}carbamoyl)-4-(3-carboxypropanoylamino)butanoic acid AIDS-170457 AIDS170457