You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(3aS,6aS)-2-propan-2-yl-3a-(pyrrolidine-1-carbonyl)-3,4,6,6a-tetrahydro-1H-pyrrolo[3,4-c]pyrrol-5-yl]-2-(4-fluorophenyl)ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H30FN3O2
assistant