4(RS)-(Dimethylamino)tetrahydro-3(SR)-furanyl (1S,2R)-1-benzyl-3-[[(2-{[2-(dimethylamino)ethyl]amino}-1,3-benzothiazol-6-yl)sulfonyl](isobutyl)amino]-2-hydroxypropylcarbamate AIDS-181376 AIDS181376