SMILES: C1=CC2=C(C=CC(=C2N=O)[O-])C=C1S(=O)(=O)[O-]
Description: The molecule is an organosulfonate oxoanion obtained by deprotonation of the sulfo and hydroxyimino groups of 5-(hydroxyimino)-6-oxo-5,6-dihydronaphthalene-2-sulfonic acid. It is a conjugate base of a 5-(hydroxyimino)-6-oxo-5,6-dihydronaphthalene-2-sulfonic acid.