(3SR,3aRS,6aSR)-Hexahydrofuro[2,3-b]furan-3-yl (1S,2R)-1-benzyl-3-[[(2-{[2-(dimethylamino)ethyl]amino}-1,3-benzothiazol-6-yl)sulfonyl](isobutyl)amino]-2-hydroxypropylcarbamate AIDS-181341 AIDS181341