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 8-ethoxy-2-methyl-N-(4-methyl-3-oxo-1,4-benzoxazin-6-yl)imidazo[1,2-a]pyridine-3-carboxamide .
user
C20H20N4O4
assistant