You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(3,4-difluorophenyl)methyl]-6-(3-phenylprop-1-ynyl)-4,7-dihydrocyclopenta[d]pyrimidine is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H18F2N2
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