[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a cyclic dicarboxylic anhydride that is furan-2,5-dione substituted by at position 3 by a carboxymethyl group and a hexyl group at position 4. It has a role as a metabolite. It is a cyclic dicarboxylic anhydride, a member of furans and a dioxo monocarboxylic acid."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][=C][Branch1][#Branch2][C][=Branch1][C][=O][O][C][Ring1][=Branch1][=O][C][C][=Branch1][C][=O][O]"}]