[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a natural product found in Vitis rotundifolia, Chrysopogon zizanioides, and other organisms with data available."}, {"from": "gpt", "value": "[C][C][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][O][C][=Branch1][C][=O][C]"}]