Using Cc1[nH]nc(C(F)(F)F)c1Cl, CC(C)(C)OC(=O)CBr to produce Cc1c(Cl)c(C(F)(F)F)nn1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.