Using O=[N+]([O-])c1ccccc1O, ClCc1cc(Cl)cc2c1OCOC2 to produce O=[N+]([O-])c1ccccc1OCc1cc(Cl)cc2c1OCOC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.