You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-(2-bromoanilino)-2-oxoethyl]-N-methyl-2-(trifluoromethylsulfonyl)pyridine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H13BrF3N3O4S
assistant