[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a natural product found in Geosmithia langdonii, Penicillium concentricum, and other organisms with data available."}, {"from": "gpt", "value": "[C][=C][C][=Branch1][C][=O][C][=Branch1][=Branch1][=C][C][Ring1][#Branch1][=O][C][O]"}]