[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. A phosphorothioate proposed as a radiation-protective agent. It causes splenic vasodilation and may block autonomic ganglia."}, {"from": "gpt", "value": "[C][Branch1][Ring1][C][N][C][N][C][C][S][P][=Branch1][C][=O][Branch1][C][O][O]"}]