[{"from": "human", "value": "Please give me some details about this molecule. [C][=C][C][=Branch2][Ring1][Ring1][=C][Branch1][O][C][=C][Ring1][=Branch1][C][C][=Branch1][C][=O][O-1][N+1][=Branch1][C][=O][O-1][O-1]"}, {"from": "gpt", "value": "The molecule is the dianion obtained by deprotonation of the phenol and carboxy functions of (4-hydroxy-3-nitrophenyl)acetic acid. It is a monocarboxylic acid anion and a phenolate anion. It is a conjugate base of a (4-hydroxy-3-nitrophenyl)acetate."}]