(S)-N-{(1S,3S,4S)-1-Benzyl-4-[2-(2,6-dimethyl-phenoxy)-ethanoylamino]-3-hydroxy-5-phenyl-pentyl}-2-(2,4-dioxo-tetrahydro-pyrimidin-1-yl)-3-methyl-butyramide AIDS-108631 AIDS108631 M-1