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 [4-[4-[4-[3-(2,5-dioxopyrrol-1-yl)propanoylamino]butyl]-1,3-dioxolan-2-yl]phenyl]peroxy formate .
user
C21H24N2O9
assistant