AIDS-095476 AIDS095476 Ethyl (3S,4R)-1-[(3R,3aS,6aR or 3S,3aR,6aS) hexahydrofuro[2,3-b]furan-3-ylozy]-3-benzyl-4-hydroxy-6-[(4-methoxyphenyl) sulfonyl]-8,8-dimethyl-1,13-dioxo-2,6,12,14-tetraazahexadecan-16-oate