[{"from": "human", "value": "Generate a molecule based on this description. The molecule is an octadec-2-enoic acid having a cis- double bond."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][/C][=C][\\C][=Branch1][C][=O][O]"}]