Using O=[N+]([O-])c1cccc(Cl)c1-c1nc(-c2ccncc2)c(-c2ccc(Cl)cc2)[nH]1 to produce Nc1cccc(Cl)c1-c1nc(-c2ccncc2)c(-c2ccc(Cl)cc2)[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.