[{"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 an octadecatrienoic acid having three double bonds located at positions 5, 9 and 12 (the all-cis-isomer). It has a role as a plant metabolite and an antineoplastic agent."}]