[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a natural product found in Ambrosia maritima, Ambrosia hispida, and other organisms with data available."}, {"from": "gpt", "value": "[C][C@H1][C][C][C@@H1][C@H1][Branch1][=C][C@][Branch1][#Branch2][C][Ring1][#Branch1][=C][C][C][Ring1][Branch1][=O][C][O][C][=Branch1][C][=O][C][Ring1][=N][=C]"}]