You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-[(3aS,7aR)-1,3-dioxo-3a,4,7,7a-tetrahydroisoindol-2-yl]-N-[(3S)-1,1-dioxothiolan-3-yl]-N-methylacetamide ?
user
C15H20N2O5S
assistant