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 [4-[3-[benzenesulfonyl(prop-2-enyl)amino]-2,5-dioxopyrrolidin-1-yl]phenyl] acetate using the IUPAC nomenclature.
user
C21H20N2O6S
assistant