You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 5-bromo-N-[3-[N-[(2,4-difluorophenyl)carbamothioylamino]-C-methylcarbonimidoyl]phenyl]furan-2-carboxamide into molecular formula.
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C20H15BrF2N4O2S
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