You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-(3-chloro-6-methyl-6-phenyl-5H-imidazo[1,2-a]pyrimidin-7-yl)phenyl]cyclobutan-1-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H23ClN4
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