You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(1R,5S)-3-benzyl-3,6-diazabicyclo[3.2.2]nonan-6-yl]-(2H-triazol-4-yl)methanone into molecular formula.
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C17H21N5O
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