You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(4-bromo-2-fluorophenyl)-2-[4-[(4-methylphenyl)methyl-methylsulfonylamino]phenoxy]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H22BrFN2O4S
assistant