[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a urate(2-). It is a tautomer of a 2,6,8-trioxo-3,6,8,9-tetrahydro-2H-purine-1,7-diide."}, {"from": "gpt", "value": "[C][=C][Branch1][=Branch2][N][C][=Branch1][C][=O][N][Ring1][=Branch1][N][=C][Branch1][=Branch1][N][=C][Ring1][#Branch2][O-1][O-1]"}]