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-benzyl-3-[[(3S)-1-ethyl-5-oxopyrrolidin-3-yl]methyl]-1-[(6-methylpyridin-2-yl)methyl]urea .
user
C22H28N4O2
assistant