You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named [3-[2-[butyl(propyl)amino]ethyl]-3-phenylpyrrolidin-1-yl]-(3,4,5-trimethoxyphenyl)methanone;N-methyl-2-(2-methylbenzimidazol-1-yl)acetamide is given. What is its corresponding molecular formula?
user
C40H55N5O5
assistant