4-(3-Hydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-pentanoic acid 17-[3-(1H-benzoimidazol-2-yl)-1-methyl-propyl]-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester AIDS-150091 AIDS150091 NSC686336