[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a dicarboxylic acid that is malonic acid substituted with a heptyl group at position C-2. It has a role as a metabolite. It is functionally related to a malonic acid."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O]"}]