Using O=[N+]([O-])c1ccc(F)c(F)c1F, CC(C)(C)NC(=O)c1cc(O)cc(C(=O)NC(C)(C)C)c1 to produce CC(C)(C)NC(=O)c1cc(Oc2c([N+](=O)[O-])ccc(F)c2F)cc(C(=O)NC(C)(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.