[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][C][/C][=C][/C][=C][/C][=C][/C][C][C][C][C][C][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is any octadecatrienoic acid with three fully-conjugated double bonds at positions 9, 11 and 13."}]