Using CC(C)(C)c1ccc(O)cc1Cl, CC(C)(C)OC(=O)CBr to produce CC(C)(C)OC(=O)COc1ccc(C(C)(C)C)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.