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system
Provide the molecular formula for the IUPAC named substance 5-(4-chloro-2-fluorophenyl)-2,3-dimethyl-7-[(2S)-2-(1H-pyrazol-4-yl)morpholin-4-yl]pyrido[4,3-d]pyrimidin-4-one .
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C22H20ClFN6O2
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