(3R,3aS,6aR or 3S,3aR,6aS) Hexahydrofuro [2,3-b] furan-3-yl-N-((1S,2R)-1-benzyl-3-(2,2-dimethyl-5-[(methylamino) carbonyl] aminopentyl)[(4-methoxyphenyl) sulfonyl] amino-2-hydroxypropyl) carbamate AIDS-095474 AIDS095474