[{"from": "human", "value": "Please give me some details about this molecule. [C][C][=C][Branch1][=N][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][O-1][N+1][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a phenolate anion resulting from the deprotonation of the hydroxy group that is ortho to the nitro group of 4-methyl-3-nitrocatechol; the major microspecies at pH 7.3. It is a conjugate base of a 4-methyl-3-nitrocatechol."}]