Using FC(F)(F)c1cccc(CBr)c1, Nc1ccc2c(Cl)nnc(Cl)c2c1 to produce FC(F)(F)c1cccc(CNc2ccc3c(Cl)nnc(Cl)c3c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.