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 [9-[(5-methyl-1-prop-2-enylpyrazol-4-yl)methyl]-3,9-diazaspiro[5.5]undecan-3-yl]-(1,2-oxazol-5-yl)methanone into molecular formula.
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C21H29N5O2
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