SMILES: C1=CC(=C(C=C1C2=C(C(=O)C3=C(C=C(C=C3O2)O)O)[O-])O)O
Description: The molecule is conjugate base of quercetin arising from selective deprotonation of the 7-hydroxy group; major species at pH 7.3. It is a conjugate base of a quercetin.