Using CCOC(=O)Cc1cc(C)c(C(=O)c2ccccc2)n1C, O=[N+]([O-])c1ccc(F)c(F)c1 to produce CCOC(=O)C(c1ccc([N+](=O)[O-])cc1F)c1cc(C)c(C(=O)c2ccccc2)n1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.