Using O=C(Cn1nc(-c2ccc(Cl)cc2)[nH]c1=O)NCc1cccc(C(F)(F)F)c1, CC(C)(C)OC(=O)CBr to produce CC(C)(C)OC(=O)Cn1c(-c2ccc(Cl)cc2)nn(CC(=O)NCc2cccc(C(F)(F)F)c2)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.