[{"from": "human", "value": "Describe this molecule. [C][Branch1][#Branch2][C][S][=Branch1][C][=O][=Branch1][C][=O][O-1][S][S][C][C][S][=Branch1][C][=O][=Branch1][C][=O][O-1].[Na+1].[Na+1]"}, {"from": "gpt", "value": "The molecule is a synthetic derivative of dithio-ethane sulfonate with uroprotective properties. In the kidney, dimesna undergoes reduction to the free thiol compound, mesna, which reacts chemically with the urotoxic ifosfamide metabolites acrolein and 4-hydroxy-ifosfamide, resulting in their detoxification. This agent also inhibits cyclophosphamide-induced hemorrhagic cystitis."}]