You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[(R)-cyclopropyl-(4-methoxyphenyl)methyl]-2-(8-methyl-2,4-dioxo-1,3-diazaspiro[4.5]decan-3-yl)acetamide into molecular formula.
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C22H29N3O4
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