(2S)-N-{(1S)-1-[3-({(2S)-3-Methyl-2-[(phenylmethoxy)carbonylamino]butanoylamino}methyl)(3S,2R)oxiran-2-yl]-2-phenylethyl}-3-methyl-2-[(phenylmethoxy)carbonylamino]butanamide AIDS-070510 AIDS070510 Cbz-Val-Phe Epoxy deriv.