4-Oxo-2-Bzpyran-CONH(MeSO2Val)Phe Epoxy deriv. 4-Oxo-4H-chromene-2-carboxylic acid [(R)-1-((S)-1-{(2R,3S)-3-[((S)-1-benzyl-2-methyl-propylcarbamoyl)-methyl]-oxiranyl}-2-phenyl-ethylcarbamoyl)-2-methanesulfonyl-2-methyl-propyl]-amide AIDS-045196 AIDS045196