You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance [(2S)-1-(4-acetyl-3,5-dimethyl-1H-pyrrol-2-yl)-1-oxopropan-2-yl] 2-[(3aR,7aS)-1,3-dioxo-3a,4,7,7a-tetrahydroisoindol-2-yl]acetate .
user
C21H24N2O6
assistant