Using CCCCCOC(=O)CCl, O=[N+]([O-])c1cc(O)c(Cl)cc1F to produce CCCCCOC(=O)COc1cc([N+](=O)[O-])c(F)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.