2-Thiophenecarboxylic acid, 3-[[2-[[[(1S)-1-[[[(1S)-1-[[[2-(4-carboxy-2,6-difluorophenyl)ethyl]amino]carbonyl]-3,3-difluoropropyl]amino]carbonyl]-3-methylbutyl]amino]carbonyl]-2,3-dihydro-1H-indol-2-yl]methyl]- AIDS-171174 AIDS171174