You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(3aS,7aR)-5-chloro-1,3-dioxo-3a,4,7,7a-tetrahydroisoindol-2-yl]-N,N-dimethylacetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C12H15ClN2O3
assistant