You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-(2-methyl-1,3-dioxoisoindol-5-yl)-2-(1-methyl-2-propan-2-yl-6,7-dihydro-4H-imidazo[4,5-c]pyridin-5-yl)acetamide .
user
C21H25N5O3
assistant