Using FC(F)(F)c1nn[nH]n1, COC(=O)c1cc(C(=O)CBr)cn1-c1ncccc1Cl to produce COC(=O)c1cc(C(=O)Cn2nnc(C(F)(F)F)n2)cn1-c1ncccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.