You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(3aR,7aR)-1,3-dioxo-3a,4,5,6,7,7a-hexahydroisoindol-2-yl]-N-methyl-N-[(2,3,4-trimethoxyphenyl)methyl]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H30N2O6
assistant