Using COC(=O)NC(=O)c1c(Br)ccc2c(C(F)(F)F)c(OC)ccc12, CC(C)(C)OC(=O)CBr to produce COC(=O)N(CC(=O)OC(C)(C)C)C(=O)c1c(Br)ccc2c(C(F)(F)F)c(OC)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.