You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-(2-ethyl-5,6-difluorobenzimidazol-1-yl)-2-N-[4-(trifluoromethyl)phenyl]pyrimidine-2,4-diamine;5-[4-(trifluoromethyl)phenyl]pyrimidine-2,4-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H24F8N10
assistant