Chemical Name : Estr-4-ene-3,17-dione (as per EP); Estr-4-ene-3,17-dione (as per USP)

Smiles : O=C(C=C1CC[C@@]2([H])[C@]3([H])CC4)CC[C@]1([H])[C@@]2([H])CC[C@]3(C)C4=O