SMILES: COC1=C(C=CC(=C1)S(=O)(=O)[O-])O
Description: The molecule is an arenesulfonate oxoanion obtained by deprotonation of the sulfo group of 4-hydroxy-3-methoxybenzene-1-sulfonic acid. It is a conjugate base of a 4-hydroxy-3-methoxybenzene-1-sulfonic acid.