You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 5-[7-(difluoromethyl)-1-propan-2-yl-3,4-dihydro-2H-quinolin-6-yl]-N-methylpyridin-2-amine into molecular formula.
user
C19H23F2N3
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