Using BrCc1ccccc1, CC(C)(C)OC(=O)NCC(C(=O)O)c1ccccc1 to produce CC(C)(C)OC(=O)NCC(C(=O)OCc1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.