Using CC(C)(C)OC(=O)N[C@@H](Cc1ccc(O)cc1)C(=O)NC1CCCCC1, O=C(CBr)c1ccccc1 to produce CC(C)(C)OC(=O)N[C@@H](Cc1ccc(OCC(=O)c2ccccc2)cc1)C(=O)NC1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.