SMILES: C1=C(NC2=C(C(=C3C=C(N=C3C2=C1C(=O)[O-])C(=O)O)[O-])[O-])C(=O)[O-]
Description: The molecule is a tricarboxylic acid anion obtained by deprotonation of the three carboxy groups as well as the 5-hydroxy group of pyrroloquinoline quinol; major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate base of a pyrroloquinoline quinol and a pyrroloquinoline quinol(3-).