[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is an octadecatrienoic acid."}, {"from": "gpt", "value": "[C][Branch2][Ring1][Branch1][C][C][C][/C][=C][\\C][C][=Branch1][C][=O][/C][=C][Branch1][=Branch1][/C][=C][/C][C][O][\\O][C][C][C][C][=Branch1][C][=O][O]"}]