[{"from": "human", "value": "Describe this molecule. [C][C][C][C][C][C][C][C][C][C][C][Branch1][=Branch2][C][C][=Branch1][C][=O][O][C][C][O]"}, {"from": "gpt", "value": "The molecule is a long-chain fatty acid ethyl ester of 3-hydroxytridecanoic acid. It has a role as a metabolite."}]