Using Fc1ccc(CBr)c(F)c1, CC(=O)N1CCc2[nH]nc(-c3cccc(C#N)c3)c2C1 to produce CC(=O)N1CCc2c(c(-c3cccc(C#N)c3)nn2Cc2ccc(F)cc2F)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.