Synonyms
(6R,7R,8R,9S,10R,13S,14R,15S,16S,17S)-3,4,6,7,8,9,11,12,13,14,15,16,20,21-Tetradecahydro-10,13-dimethylspiro(17H-dicyclopropa(6,7:15,16)cyclopenta(A)phenanthrene-17,2(5H)-furan)-3(10H),5-dione; Spiro(17H-dicyclopropa(6,7:15,16)cyclopenta(A)phenanthrene-17