You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [5-[6-[6-methoxy-5-(trifluoromethyl)pyridin-3-yl]quinazolin-4-yl]pyridin-3-yl]-(4-methylpiperazin-1-yl)methanone by IUPAC nomenclature, provide its molecular formula.
user
C26H23F3N6O2
assistant