You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 7-(2-methyl-1H-imidazo[4,5-b]pyridin-6-yl)-4-(2,6,6-trimethyl-7,8-dihydro-5H-quinazolin-4-yl)-1,2-benzoxazepine ?
user
C27H26N6O
assistant