Using CCOC(=O)c1c(NC(=O)C(C)(C)C)c(F)c(N=[N+]=[N-])c(F)c1OC1CCCCO1 to produce CCOC(=O)c1c(NC(=O)C(C)(C)C)c(F)c(N)c(F)c1OC1CCCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.