Using CC=C(C)C1CC(=O)CC(c2cccc(Cl)c2)C12C(=O)Nc1cc(Cl)ccc12, [N-]=[N+]=[N-] to produce C/C=C(\C)C1CC(=O)NCC(c2cccc(Cl)c2)C12C(=O)Nc1cc(Cl)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.