Disufene

trimethyl-[2-[[4-[4-[2-(trimethylammonio)ethylsulfamoyl]phenyl]phenyl]sulfonylamino]ethyl]ammonium diiodide

trimethyl-[2-[[4-[4-[2-(trimethylazaniumyl)ethylsulfamoyl]phenyl]phenyl]sulfonylamino]ethyl]azanium diiodide