You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-(2-methylphenyl)-3-[4-[2-oxo-2-[6-(2-oxooxan-4-yl)-3,4-dihydro-2H-quinolin-1-yl]ethyl]phenyl]urea .
user
C30H31N3O4
assistant