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system
Name the molecular formula for the molecule established as 3-(2,3-dichlorophenyl)-6-spiro[1,3-dihydroindene-2,4'-piperidine]-1'-yl-2H-pyrazolo[3,4-d]pyrimidine-4-carbonitrile using the IUPAC nomenclature.
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C25H20Cl2N6
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