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-[[5-bromo-2-(1-propylpyrazol-4-yl)oxypyridin-3-yl]methyl]propan-1-amine is given. What is its corresponding molecular formula?
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C15H21BrN4O
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