(4R)-4-{N-[(1S)-1-(N-{(1S)-1-[N-((1S)-2-Cyclohexyl-1-{N-[(2H-1,2,3,4-tetraazol-5-ylcarbonyl)cyclopropyl]carbamoyl}ethyl)carbamoyl]-2-methylbutyl}carbamoyl)-3-methylbutyl]carbamoyl}-4-(3-carboxypropanoylamino)butanoic acid AIDS-170449 AIDS170449