Synonyms: diethyl{3-[(8s,9s,10r,13s,14s,17s)-10,13-dimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1h-cyclopenta[a]phenanthren-17-yl]-3-oxopropyl}phosphonate(non-preferred name);NSC77621;AC1L5PBQ;AC1Q6STF;AR-1I5137;NSC-77621;(8S,9S,10R,13S,14S,17S)-17-(3-diethoxyphosphorylpropanoyl)-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one