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 1-(3H-benzimidazol-5-yl)-4-hydroxy-3-methyl-2-(3-methylphenyl)-2H-pyrrol-5-one using the IUPAC nomenclature.
user
C19H17N3O2
assistant