(3R,3aS,6aR)-Hexahydrofuro[2,3-b]furan-3-yl [(1S,2R)-3-((1,3-benzodioxol-5-ylsulfonyl){2,2-dimethyl-5-[(methylsulfonyl)amino]pentyl}amino)-1-benzyl-2-hydroxypropyl]carbamate AIDS-190990 AIDS190990