(R)-N-((S)-1-{(2R,3S)-3-[(1-Benzyl-2-methyl-propylcarbamoyl)-methyl]-oxiranyl}-2-phenyl-ethyl)-3-methanesulfonyl-2-(2-methoxy-ethanoylamino)-3-methyl-butyramide AIDS-045217 AIDS045217 MeOAc(MeSO2-Val)Phe Epoxy deriv.