Using CCOC(=O)C(Cc1ccc(Br)cc1)c1ccc(OC)c(N(CC(C)C)C(=O)C(C)(C)C)c1 to produce COc1ccc(C(Cc2ccc(Br)cc2)C(=O)O)cc1N(CC(C)C)C(=O)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.