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 5-methylsulfonyl-1'-(pyridin-3-ylmethyl)spiro[6,7-dihydro-1H-imidazo[4,5-c]pyridine-4,4'-piperidine] into molecular formula.
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C17H23N5O2S
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