[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a natural product found in Strychnos cathayensis with data available."}, {"from": "gpt", "value": "[C][=C][C@H1][C][O][C][=C][C@H1][Ring1][=Branch1][C][C][O][C][Ring1][=Branch1][=O]"}]