SMILES: C1=CC(=C(C=C1[N+](=O)[O-])O)[O-]
Description: The molecule is a phenolate anion that is the conjugate base of 4-nitrocatechol arising from selective deprotonation of the hydroxy group at the position para to the nitro group; the major species at pH 7.3. It has a role as a human xenobiotic metabolite. It is a conjugate base of a 4-nitrocatechol.