2(1H)-Isoquinolinepentanoic acid, 3-[[[(1R)-2-[[2-(2-chlorophenyl)ethyl]amino]-1-(mercaptomethyl)-2-oxoethyl]amino]carbonyl]-3,4-dihydro-g-[[(2-methylpropoxy)carbonyl]amino]-d-oxo-, (gR,3S)- AIDS-171047 AIDS171047