You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-bromo-N-phenyl-2,6,8,9-tetrahydropyrazolo[4,3-f][2,7]naphthyridine-7-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H14BrN5O
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