(S)-N-{(1S,3S,4S)-1-Benzyl-4-[2-(2,6-dimethyl-phenoxy)-ethanoylamino]-3-hydroxy-5-phenyl-pentyl}-2-(4-hydroxy-2-oxo-tetrahydro-pyrimidin-1-yl)-3-methyl-butyramide AIDS-108632 AIDS108632 M-3/M-4