You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[(4-cyanophenyl)methyl]-N-[2-(dimethylamino)ethyl]-4-[(2-oxo-3,4-dihydro-1H-quinolin-6-yl)oxy]butanamide into molecular formula.
user
C25H30N4O3
assistant