You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-benzyl-N-[2-(dimethylamino)-2-(3-methoxyphenyl)ethyl]-1,3-dioxoisoindole-5-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H27N3O4
assistant