[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a natural product found in Calea ternifolia, Coreopsis venusta, and other organisms with data available."}, {"from": "gpt", "value": "[C][=C][C][C][C][C][/C][=C][/C][=C][/C][#C][C][#C][/C][=C][/C][O]"}]