You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 1-(5-chloro-2-methoxyphenyl)-4-[1-[2-(3,5-dimethylphenoxy)ethyl]benzimidazol-2-yl]pyrrolidin-2-one ?
user
C28H28ClN3O3
assistant