Using CC(C)(C)OC(=O)NCc1ccc(-c2ccc(O)c(Br)c2)cc1, COC(=O)CBr to produce COC(=O)COc1ccc(-c2ccc(CNC(=O)OC(C)(C)C)cc2)cc1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.