You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named bis(2-methylpropyl) (1R,2R,3S,4S)-4-hydroxy-4-methyl-6-oxo-2-pyridin-3-ylcyclohexane-1,3-dicarboxylate is given. What is its corresponding molecular formula?
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C22H31NO6
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