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 3-[1-(6,7-dimethoxyquinazolin-4-yl)piperidin-4-yl]-1-methyl-2,4-dioxoquinazoline-6-carboxylic acid .
user
C25H25N5O6
assistant