Exemestane Impurity 1

Chemical Name: (2aR,3aR,3bR,3cS,5aS,8aS,8bR)-3b,5a-dimethyl-10-methylene-3a,3b,3c,4,5,5a,7,8,8a,8b,9,10-dodecahydro-2H-cyclopenta[7,8]phenanthro[3,4-b]oxirene-2,6(2aH)-dione

Smile: O=C1[C@H](O2)[C@H]2[C@@]3(C)C(C(C[C@]4([H])[C@]3([H])CC[C@@]5(C)[C@@]4([H])CCC5=O)=C)=C1