Spironolactone Impurity 3

Chemical Name: (8R,9S,10R,13S,14S,17R)-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]-3,5',6-trione

Smile: C[C@@]1(CCC(C=C21)=O)[C@@]3([H])CC[C@@]([C@@]4(OC(CC4)=O)CC5)(C)[C@]5([H])[C@]3([H])CC2=O