Synonyms: 6916-08-1;NSC171529;AC1L6U3B;NSC-171529;10',13'-dimethyl-17'-(6-methylheptan-2-yl)-1',7',8',9',10',11',12',13',14',15',16',17'-dodecahydrospiro[cyclopentane-1,4'-cyclopenta[a]phenanthren]-3'(2'H)-one;10,13-dimethyl-17-(6-methylheptan-2-yl)spiro[2,7,8,9,11,12,14,15,16,17-decahydro-1H-cyclopenta[a]phenanthrene-4,1'-cyclopentane]-3-one