Using O=[N+]([O-])c1ccn(Cc2cc(Cl)ccc2OCc2ccccc2)n1 to produce Nc1ccn(Cc2cc(Cl)ccc2OCc2ccccc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.