(3S,5aR,5bR,6S,11aS,13bS)-3-(1-Hydroxy-1-methylethyl)-5a,5b,8,8,11a,13b-hexamethylicosahydro-1H-cyclopenta[a]chrysen-6-yl acetate 7beta-Acetyl-22-hydroxyhopane AIDS-113952 AIDS113952