[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a natural product found in Ambrosia trifida and Glehnia littoralis with data available."}, {"from": "gpt", "value": "[C][/C][=C][Branch1][C][/C][\\C][=Branch1][C][=O][O][C@@H1][C][=C][Branch2][Ring1][#Branch1][C][C][C@][Branch1][P][C@@][Ring1][#Branch1][Branch1][O][C][C][C@@H1][Ring1][Branch1][C][Branch1][C][C][C][C][O][C]"}]