You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[2,2-dimethyl-4-(2-oxopyrrolidin-1-yl)pentanoyl]oxyethyl-ethyl-dimethylazanium;ethanesulfonoperoxoate;methane .
user
C21H46N2O7S
assistant