Using COc1ccc2c(c1)CCC(I)C(=O)N2, [N-]=[N+]=[N-] to produce COc1ccc2c(c1)CCC(N=[N+]=[N-])C(=O)N2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.