Using NC(=O)C(F)(F)F, CSc1cc(C(=O)CBr)ccc1OC(=O)c1ccccc1 to produce CSc1cc(C(=O)CNC(=O)C(F)(F)F)ccc1OC(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.