You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-(4-bromo-2-fluorophenyl)-1,3,4-trimethyl-2,6-dioxo-5H-pyrimidin-3-ium-5-sulfonamide is given. What is its corresponding molecular formula?
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C13H14BrFN3O4S+
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