You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2,6-difluorophenyl)methyl]-3-[[4-methylidene-6-(1H-pyrazol-4-yl)quinazolin-3-yl]methyl]benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H21F2N5O
assistant