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 (5S)-9-[(2,4-difluorophenyl)methyl]-1-(2-oxo-2-pyrrolidin-1-ylethyl)-1,9-diazaspiro[4.6]undecan-2-one into molecular formula.
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C22H29F2N3O2
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