You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[[(3aS,7aS)-2-[6-(2-fluoro-2-methylpropyl)thieno[2,3-d]pyrimidin-4-yl]-3,3a,4,6,7,7a-hexahydro-1H-pyrrolo[3,4-c]pyridin-5-yl]methyl]-1H-pyridin-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H28FN5OS
assistant