(9S,20S,1R,2R,3R,5R,8R,18R)-2-[(2S,4S,3R,6R)-4-(Dimethylamino)-3-hydroxy-6-methyl(2H-3,4,5,6-tetrahydropyran-2-yloxy)]-8-ethyl-9-hydroxy-1,3,5,9,18,20-hexamethyl-19-(2-oxo-1-azapropylidene)-7,11,16-trioxabicyclo[8.6.4]icos-13-ene-4,6-dione AIDS-184286 AIDS184286