[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C][C][C][Branch1][Ring2][C][Ring1][=Branch1][C][=Branch1][C][=O][O][C][Ring1][#Branch1][=O]"}, {"from": "gpt", "value": "The molecule is a cyclic dicarboxylic anhydride that is the cyclic anhydride of hexahydrophthalic acid. It has a role as an allergen. It is a cyclic dicarboxylic anhydride and a tetrahydrofurandione."}]