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 N-ethyl-2,2-dimethyl-1,1-dioxo-N'-[[4-[(2-oxopyrrolidin-1-yl)methyl]phenyl]methyl]-1,4-thiazinane-4-carboximidamide .
user
C21H32N4O3S
assistant