(4R)-4-[N-((1S)-1-{N-[(1S)-1-(N-{(1S)-2-Cyclohexyl-1-[N-(1-ethyl-3,3,4,4,4-pentafluoro-2-oxobutyl)carbamoyl]ethyl}carbamoyl)-2-methylbutyl]carbamoyl}-3-methylbutyl)carbamoyl]-4-(3-carboxypropanoylamino)butanoic acid AIDS-170446 AIDS170446