(4R)-4-[N-((1S)-1-{N-[(1S)-1-(N-{(1S)-1-[N-((1S)-1-Carboxy-2-phenylethyl)carbamoyl]-2-cyclohexylethyl}carbamoyl)-2-methylbutyl]carbamoyl}-3-methylbutyl)carbamoyl]-4-(3-carboxypropanoylamino)butanoic acid AIDS-170454 AIDS170454