You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-amino-6-[2-[7-fluoro-3-(3-fluorophenyl)-6-methyl-4-oxoquinolizin-2-yl]ethylamino]pyrimidine-5-carbonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H18F2N6O
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