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 2-[(3,5-difluorophenyl)methyl]-8-(2-pyridin-3-ylacetyl)-2,8-diazaspiro[4.5]decan-3-one into molecular formula.
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C22H23F2N3O2
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