[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a natural product found in Kopsia singapurensis with data available."}, {"from": "gpt", "value": "[C][O][C][=Branch1][C][=O][C@@][Branch2][Ring2][#C][C@H1][Branch2][Ring2][#Branch2][C@@][C][C][C@][Ring1][=Branch1][C@@][Branch1][S][C@H1][Ring1][=Branch1][N][Branch1][Branch1][C][C][Ring1][Branch1][C][C][=C][Ring1][N][C][=C][C][=C][C][=C][Ring1][=Branch1][N][Ring1][S][C][=Branch1][C][=O][O][C][O][O]"}]