Using O=N[O-], CC(C)(C)c1ccc(NCc2ccc(Cl)cc2)cc1 to produce CC(C)(C)c1ccc(N(Cc2ccc(Cl)cc2)N=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.