[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a natural product found in Karenia brevis with data available."}, {"from": "gpt", "value": "[C][C][C][O][P][=Branch1][C][=S][Branch1][=N][N][N][=C][Branch1][C][C][C][=Branch1][Ring1][=N][O][C][O][C][C][C]"}]