You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3aS,6S,6aS)-4-tert-butyl-6-fluoro-3a,5,6,6a-tetrahydrofuro[3,2-b]pyrrol-3-one;methane is the IUPAC name of a molecule. Please give its molecular formula.
user
C11H20FNO2
assistant