You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-[1-[(4-chloro-3,5-diethoxyphenyl)methyl]piperidin-4-yl]-4,6-dimethylpyrimidin-2-amine by IUPAC nomenclature, provide its molecular formula.
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C22H31ClN4O2
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