Using O=C(n1ccnc1)n1ccnc1, Nc1cc(Cl)cc([N+](=O)[O-])c1O to produce O=c1[nH]c2cc(Cl)cc([N+](=O)[O-])c2o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.