Using CCOC(=O)c1cc2c(Cl)ccc3c2n1CCCCC3O, CCOC(=O)C(=Cc1cccc(F)c1C)N=[N+]=[N-] to produce CCOC(=O)c1cc2c(Cl)ccc3c2n1CCCCC3OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.