Drospirenone Ether Impurity     

Chemical Name: (4aR,6aS,7S,7aS,8aS,8dR,9aR)-4a,6a-dimethyl-4,4a,4b,4',5,5',6,6a,7a,8,8a,8b,8c,8d,9,9a-hexadecahydro-3'H-spiro[cyclopropa[4,5]cyclopenta[1,2-a]cyclopropa[l]phenanthrene-7,2'-furan]-2(3H)-one

Smile: O=C1CC[C@@]2(C)C([C@H](C3)[C@H]3C4C2CC[C@@]5(C)C4[C@H]6[C@H](C6)[C@@]57CCCO7)=C1