(3R,3aS,6aR or 3S,3aR,6aS) Hexahydrofuro[2,3-b]furan-3-yl-N-((1S,2R)-1-benzyl-3-(2,2-dimethyl-4-[(methylamino) carbonyl] aminobutyl)[(4-methoxyphenyl) sulfonyl] amino-2-hydroxypropyl) carbamate AIDS-095479 AIDS095479