[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a natural product found in Centaurea macrocephala with data available."}, {"from": "gpt", "value": "[C][C][=C][C][#C][C][#C][C][C][=C][C][C][C][C][C][C][=C][Branch1][#C][C][C][C][C][C][=C][C][C][#C][C][#C][C][=C][C][C][=O]"}]