SMILES: C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@]2(C#C)O)CCC4=C3C=CC(=C4)OS(=O)(=O)[O-]
Description: The molecule is a steroid sulfate oxoanion that is the conjugate base of 17alpha-ethynylestradiol 3-sulfate arising from deprotonation of the sulfate OH group; major species at pH 7.3. It is a conjugate base of a 17alpha-ethynylestradiol 3-sulfate.