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system
2-[(S)-[(6-amino-5-chloro-2-methylpyrimidin-4-yl)amino]-cyclopropylmethyl]-8-fluoro-4-oxo-3-pyridin-3-ylquinazoline-5-carbonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H18ClFN8O
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