[(8S,11R,13S,14S,17R)-11-(4-dimethylaminophenyl)-17-(2-methoxyacetyl)-13-methyl-3-oxo-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-17-yl] acetate acetic acid [(8S,11R,13S,14S,17R)-11-(4-dimethylaminophenyl)-17-(2-methoxy-1-oxoethyl)-13-methyl-3-oxo-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-17-yl] ester acetic acid [(8S,11R,13S,14S,17R)-11-(4-dimethylaminophenyl)-3-keto-17-(2-methoxyacetyl)-13-methyl-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-17-yl] ester [(8S,11R,13S,14S,17R)-11-(4-dimethylaminophenyl)-17-(2-methoxyethanoyl)-13-methyl-3-oxo-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-17-yl] ethanoate