You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 4-(3,4-dihydro-1H-isoquinolin-2-yl)-6-ethyl-N-(4-fluoro-2-methylphenyl)pyrimidin-2-amine;hydrochloride into molecular formula.
user
C22H24ClFN4
assistant