[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is an oxopurine."}, {"from": "gpt", "value": "[2H][C][Branch1][C][2H][Branch1][C][2H][N][C][=N][C][=C][Ring1][Branch1][C][=Branch1][C][=O][N][C][=Branch1][C][=O][N][Ring1][Branch2][C][Branch1][C][2H][Branch1][C][2H][2H]"}]