You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(2-bromo-6-chloro-4-fluorophenyl)-1,4-dioxaspiro[4.5]dec-6-ene-8-sulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C14H14BrClFNO4S
assistant