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-[[4-(aminomethyl)-3,3-dimethylpyrrolidin-1-yl]methyl]-2-(2,6-dioxopiperidin-3-yl)isoindole-1,3-dione using the IUPAC nomenclature.
user
C21H26N4O4
assistant