AIDS-171071 AIDS171071 L-Prolinamide, N-[(2-methylpropoxy)carbonyl]-L-valyl-N-[(1S)-1-[[[2-[4-(4,5-dihydro-5-oxo-1,2,4-oxadiazol-3-yl)phenyl]ethyl]amino]carbonyl]-3,3-difluoropropyl]-4-phenyl-, (4S)-