Using CCCOC(=O)[C@@H](N)Cc1ccc(-c2c(C)n(C)c(=O)n(C)c2=O)cc1, [N-]=[N+]=NCCCCC1(C(=O)O)CCCC1 to produce CCCOC(=O)[C@H](Cc1ccc(-c2c(C)n(C)c(=O)n(C)c2=O)cc1)NC(=O)C1(CCCCN=[N+]=[N-])CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.