Chemical Name : 3-(Propan-2-yloxy)-19-nor-17α-pregna-3,5-dien-20-yn-17-yl acetate (as per EP)

Smiles : C[C@@]12[C@@](C#C)(OC(C)=O)CC[C@@]1([H])[C@]3([H])CC=C4C=C(OC(C)C)CC[C@]4([H])[C@@]3([H])CC2