Using Nc1c[nH]c2ncc(Br)c(F)c12, CS(=O)(=O)CC(=O)O to produce CS(=O)(=O)CC(=O)Nc1c[nH]c2ncc(Br)c(F)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.