(R)-N-((S)-1-{(2R,3S)-3-[(1-Isopropyl-2-methyl-propylcarbamoyl)-methyl]-oxiranyl}-2-phenyl-ethyl)-3-methanesulfonyl-3-methyl-2-(2-pyrrolidin-1-yl-ethanoylamino)-butyramide AIDS-045192 AIDS045192 Pyrrol-MeCO(MeSO2Val)Phe Epoxy deriv.