(7α,17α)-17-羟基-3-氧代-孕甾-4,9(11)-二烯-7,21-二羧酸-gammar-内酯甲酯

(2'R,7R,8R,10S,13S,14S)-Methyl 10,13-dimethyl-3,5'-dioxo-1,2,3,4',5',6,7,8,10,12,13,14,15,16-tetradecahydro-3'H-spiro[cyclopenta[a]phenanthrene-17,2'-furan]-7-carboxylate