Using O=[N+]([O-])c1ccc(Oc2ccc(C(F)(F)F)cc2Cl)cc1O, CCOC(=O)C(Br)C(=O)OCC to produce CCOC(=O)C(Oc1cc(Oc2ccc(C(F)(F)F)cc2Cl)ccc1[N+](=O)[O-])C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.