(3R,3aS,6aR or 3S,3aR,6aS)-Hexahydrofuro [2,3-b] furan-3-yl N-((1S,2R)-1-benzyl-3-2,2-dimethyl-4-[(morpholinocarbonyl) amino] butyl [(4-methoxyphenyl) sulfonyl] amino-2-hydroxypropyl) carbamate AIDS-095496 AIDS095496