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system
Name the molecular formula for the molecule established as methyl 3-[(4-chlorocyclohexyl)methyl]-5-(piperidin-3-ylmethyl)-2,3a,4,6,7,7a-hexahydro-1H-imidazo[4,5-c]pyridine-6-carboxylate using the IUPAC nomenclature.
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C21H37ClN4O2
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