[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][=C][Branch2][Ring2][=Branch1][N][C][=C][Branch2][Ring1][#C][C][=Branch2][Ring1][#Branch2][=C][C][=C][Branch1][S][N][=C][Ring1][Branch1][C][Ring1][=Branch2][=C][Ring1][=N][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O][O-1][O-1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "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-)."}]