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