You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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4-bromo-5-methyl-N-[[3-[2-[methyl(oxan-4-yl)amino]ethoxy]phenyl]methyl]-1H-pyrazole-3-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
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C20H27BrN4O3
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