Chemical Name : 19-Nor-17α-Pregna-1,3,5(10)-trien-20-yne-3,17-diol (as per EP & USP)

Smiles : C#C[C@]1(O)CC[C@@]2([H])[C@]3([H])CCC4=C(C=CC(O)=C4)[C@@]3([H])CC[C@]12C