(R)-N-((S)-1-{(2R,3S)-3-[(1-Benzyl-2-methyl-propylcarbamoyl)-methyl]-oxiranyl}-2-phenyl-ethyl)-2-(2-isopropoxy-ethanoylamino)-3-methanesulfonyl-3-methyl-butyramide AIDS-045218 AIDS045218 i-PrOAc(MeSO2-Val)Phe Epoxy deriv.