You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by [(3aS,7aR)-3a-(hydroxymethyl)-2-methylsulfonyl-1,3,4,6,7,7a-hexahydropyrrolo[3,4-c]pyridin-5-yl]-(1,3-oxazol-4-yl)methanone ?
user
C13H19N3O5S
assistant