[{"from": "human", "value": "What can you tell me about this molecule? [C][=C][Branch2][Ring1][C][C][=C][Branch1][Ring2][N][Ring1][Branch1][N][=C][Branch1][=Branch1][N][C][Ring1][#Branch1][=O][N][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a monocarboxylic acid anion resulting from the removal of a proton from the carboxylic acid group of 7-carboxy-7-deazaguanine. The major form of 7-carboxy-7-deazaguanine at pH 7.3. It is a conjugate base of a 7-carboxy-7-deazaguanine."}]