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system
Name the molecular formula for the molecule established as 2-[4-[4-chloro-3-[(dimethylamino)methyl]phenyl]piperazin-1-yl]-2-[4-chloro-5-methyl-3-(trifluoromethyl)pyrazol-1-yl]acetaldehyde using the IUPAC nomenclature.
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C20H24Cl2F3N5O
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