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 N-[(3-chloro-4-fluorophenyl)methyl]-3-[(1-oxidopyridin-1-ium-4-yl)methylamino]-1H-pyrazolo[4,3-d]pyrimidine-7-carboxamide into molecular formula.
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C19H15ClFN7O2
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