2-Thiophenecarboxylic acid, 3-[[2-[[[(1S)-1-[[[(1S)-1-[[[2-(4-carboxy-2-chlorophenyl)ethyl]amino]carbonyl]-3,3-difluoropropyl]amino]carbonyl]-3-methylbutyl]amino]carbonyl]-1,2,3,4-tetrahydro-2-quinolinyl]methyl]- AIDS-171176 AIDS171176