Synonyms: (8r,9s,10r,13s,14s,17s)-10,13-dimethyl-1,4',5',6,7,8,9,10,11,12,13,14,15,16-tetradecahydrospiro[cyclopenta[a]phenanthrene-17,2'-pyran]-3,6'(2h,3'h)-dione;NSC70603;AC1L5IGK;KST-1A4107;AR-1A7243;NSC-70603;(8R,9S,10R,13S,14S,17S)-10,13-dimethylspiro[2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene-17,6'-oxane]-2',3-dione