Using COc1ccc(Cl)cc1C(=O)/N=c1\sn(C(C)(C)C)cc1CCN=[N+]=[N-] to produce COc1ccc(Cl)cc1C(=O)/N=c1\sn(C(C)(C)C)cc1CCN, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.