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system
Provide the molecular formula for the IUPAC named substance (2R)-2-(4-chloro-3-fluorophenyl)-2-[3-chloro-5-[2-[(2-methylpyrazol-3-yl)amino]pyrimidin-4-yl]pyridin-2-yl]ethanol .
user
C21H17Cl2FN6O
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