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-methoxyphenyl)-1-[4-[(3-methyl-1,2,4-oxadiazol-5-yl)methyl]-1-oxa-9-azaspiro[5.5]undecan-9-yl]ethanone into molecular formula.
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C22H29N3O4
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