Chemical Name : 13-Ethyl-3-methoxy-18,19-dinor-17α-pregna-1,3,5(10)-trien-20-yn-17-ol (as per EP)

Smiles : [H][C@]1([C@]2([H])CC[C@@]3(CC)[C@@]1([H])CC[C@@]3(O)C#C)CCC4=C2C=CC(OC)=C4