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-[[3-(diethylcarbamoyloxy)-4-(3-hydroxy-1,1-dioxo-2H-1,2,5-thiadiazol-5-yl)phenyl]methyl]phenyl] methanesulfonate .
user
C21H25N3O8S2
assistant