Synonyms: (5s,8r,9s,10s,13s,14s,17r)-10,13-dimethyltetradecahydro-3'h-spiro[cyclopenta[a]phenanthrene-17,2'-furan]-3,5'(2h,4'h)-dione;31701-23-2;NSC70595;AC1L5IFW;AC1Q6J2W;KST-1A3749;26302-67-0;AR-1A6550;NSC-70595;(5S,8R,9S,10S,13S,14S,17R)-10,13-dimethylspiro[2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthrene-17,5'-oxolane]-2',3-dione