[{"from": "human", "value": "Describe this molecule. [C][C][=C][Branch2][Ring1][Ring2][O][C][=Branch1][=Branch2][=C][Ring1][Branch1][C][=Branch1][C][=O][O][C][C][C][=Branch1][C][=O][O][C][C][C][C][Branch1][C][C][O]"}, {"from": "gpt", "value": "The molecule is a heterocyclic fatty acid."}]