[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a pyridinedicarboxylate. It is a conjugate base of a dinicotinate(1-)."}, {"from": "gpt", "value": "[C][=C][Branch1][N][C][=N][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1]"}]