Using COC(=O)CCN, CC(C)CC(Sc1ccc(Br)cc1)c1ccc(C(=O)O)cc1 to produce COC(=O)CCNC(=O)c1ccc(C(CC(C)C)Sc2ccc(Br)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.