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 1-[4-hydroxy-3,3-dimethyl-9-(3-phenylpropyl)-2,9-diazaspiro[5.5]undecan-2-yl]ethanone into molecular formula.
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C22H34N2O2
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