Using CCOC(=O)c1c[nH]nc1C(F)(F)F, CC(C)(C)OC(=O)CBr to produce CCOC(=O)c1cn(CC(=O)OC(C)(C)C)nc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.