Using Nc1ccc(Oc2ccc(C(F)(F)F)cc2)cc1O, O=C(O)Cc1ccc(Br)cc1 to produce O=C(Cc1ccc(Br)cc1)Nc1ccc(Oc2ccc(C(F)(F)F)cc2)cc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.