1-[(1R,3aR,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bS)-9-Hydroxy-3a,5a,5b,8,8,11a-hexamethylicosahydro-1H-cyclopenta[a]chrysen-1-yl]ethanone 3-Hydroxynorlupen-2-one AIDS-113956 AIDS113956