You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(3-fluoro-2-methylphenyl)-2-[5-[4-methyl-1-(5-methyl-1,3-thiazol-2-yl)-3,6-dihydro-2H-pyridin-5-yl]pyrazin-2-yl]ethanone;hydrochloride The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H24ClFN4OS
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