You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 4-(3,4-dihydro-2H-quinolin-1-yl)-6-methyl-N-[2-(trifluoromethyl)phenyl]pyrimidin-2-amine using the IUPAC nomenclature.
user
C21H19F3N4
assistant