(8R,9S,10R,13S,14S,17R)-3-hydroxy-10,13-dimethyl-1,2,3,4,7,8,9,10,11,12,13,14,15,16-tetradecahydro-5'H-spiro[cyclopenta[a]phenanthrene-17,2'-furan]-5'-one
(8R,9S,10R,13S,14S,17R)-3-hydroxy-10,13-dimethyl-1,2,3,4,7,8,9,10,11,12,13,14,15,16-tetradecahydro-5'H-spiro[cyclopenta[a]phenanthrene-17,2'-furan]-5'-one