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Provide the molecular formula for the IUPAC named substance 2-[(7R)-7-(4-chlorophenyl)-5-methylidene-6,7-dihydro-4H-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]isoindole-1,3-dione .
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C20H14ClN5O2
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