You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as N-benzyl-2-[2-[1-(4-ethylphenyl)-5-oxopyrrolidin-3-yl]benzimidazol-1-yl]-N-propan-2-ylacetamide using the IUPAC nomenclature.
user
C31H34N4O2
assistant