Using CCOC(=O)c1cnc2cc(Cl)ccc2c1Cl, [N-]=[N+]=[N-] to produce CCOC(=O)c1cnc2cc(Cl)ccc2c1N=[N+]=[N-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.