[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a plant toxin found in several species, most notably water hemlock (Cicuta species). It is a cholinergic poison, causing death by disruption of the central nervous system. (L1232)"}, {"from": "gpt", "value": "[C][C][C][C][Branch1][#C][/C][=C][/C][=C][/C][=C][/C][#C][C][#C][C][C][C][O][O]"}]