Using CC(O)(C(=O)O)C(F)(F)F, NNC(=O)c1nc(Br)c(C(F)(F)F)cc1N to produce CC(O)(C(=O)NNC(=O)c1nc(Br)c(C(F)(F)F)cc1N)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.