Using BrCc1ccccc1, COc1ccc(C[C@H](NC(=O)OC(C)(C)C)[C@@H]2CCC(=O)O2)cc1 to produce COc1ccc(C[C@H](NC(=O)OC(C)(C)C)[C@@H]2C[C@@H](Cc3ccccc3)C(=O)O2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.