(4R)-4-[N-((1S)-1-{N-[(1S)-1-(N-{(1S)-2-Cyclohexyl-1-[N-(1-(1H-1,2,3,4-tetraazol-5-yl)(1S)butyl)carbamoyl]ethyl}carbamoyl)-2-methylbutyl]carbamoyl}-3-methylbutyl)carbamoyl]-4-(3-carboxypropanoylamino)butanoic acid AIDS-170455 AIDS170455