Using COCCCc1cn(C)c2ccc(CC(CC(NC(=O)OC(C)(C)C)C3CO3)C(C)C)cc12, [N-]=[N+]=[N-] to produce COCCCc1cn(C)c2ccc(CC(CC(NC(=O)OC(C)(C)C)C(O)CN=[N+]=[N-])C(C)C)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.