[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a natural product found in Rumex obtusifolius with data available."}, {"from": "gpt", "value": "[C][=C][O][C][=Branch1][Ring2][=C][Ring1][Branch1][C][=Branch1][C][=O][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}]