AIDS-045181 AIDS045181 Pyrid-MeOCO(MeSO2Val)Phe Epoxy deriv. [[(5S)-[[N-(2-pyridylmethoxy)carbonyl]-.beta.-methanesulfonyl-L-valinylyl]amino]-(4R,3S)-epoxy-6-phenyl-hexanoyl]-[(2S)-[1-phenyl-3-methyl]butyl]amide