(3R,3aS,6aR or 3S,3aR,6aS)-Hexahydrofuro [2,3-b] furan-3-yl-N-((1S,2R)-1-benzyl-3-(5-[(dimethylamino) carbonyl] amino-2,2-dimethylpentyl) [(4-methoxyphenyl) sulfonyl] amino-2-hydroxypropyl) carbamate AIDS-095491 AIDS095491