英文别名18-Methylestra-2,5(10)-dien-3-ol-17-one 17-ethylene ketal 3-methyl ether; Gona-2,5(10)-dien-17-one, 13-ethyl-3-methoxy-, cyclic 1,2-ethanediyl acetal, (8α)-(±)-; (8'R,9'S,13'S,14'S)-13'-ethyl-3'-methoxyspiro[1,3-dioxolane-2,17'-4,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene]; 8a-Gona-2,5(10)-dien-17-one,13-ethyl-3-methoxy-,cyclic ethylene acetal; Spiro[17H-cyclopenta[a]phenanthrene-17,2'-[1,3]dioxolane],gona-2,5(10)-dien-17-one deriv.; Gona-2,5(10)-dien-17-one,13-ethyl-3-methoxy-,cyclic 1,2-ethanediyl acetal,(8a)- 
