You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-fluoro-7-(5-methyl-8-piperidin-1-yl-1,4-dihydroimidazo[4,5-b]azepin-2-yl)-5-pyrimidin-5-yl-1a,2-dihydro-1H-cyclopropa[b]quinoline is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H26FN7
assistant