Using CC(C)(CCOCc1ccccc1)C[C@H](NC(=O)OC(C)(C)C)[C@@H]1CCC(=O)O1, BrCc1ccccc1 to produce CC(C)(CCOCc1ccccc1)C[C@H](NC(=O)OC(C)(C)C)[C@@H]1C[C@@H](Cc2ccccc2)C(=O)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.