You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(3aS,6aS)-5-methylsulfonyl-2,3,3a,4,6,6a-hexahydropyrrolo[2,3-c]pyrrole-1-carbonyl]-1-methylpyridin-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H19N3O4S
assistant