Using COC(=O)c1cc(O)cc(C(=O)OC)c1, O=[N+]([O-])c1ccc(Cl)cc1 to produce COC(=O)c1cc(Oc2ccc([N+](=O)[O-])cc2)cc(C(=O)OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.