(9S,1R,2R,3R,5R,8R,17R,19R)-2-[(2S,4S,3R,6R)-4-(Dimethylamino)-3-hydroxy-6-methyl(2H-3,4,5,6-tetrahydropyran-2-yloxy)]-8-ethyl-9-hydroxy-1,3,5,9,17,19-hexamethyl-13-methylene-7,11,15-trioxabicyclo[8.5.4]nonadecane-4,6,18-trione AIDS-184257 AIDS184257