Using CN(C)C=O, CC(C)(C)OC(=O)Nc1ccc(NC(=O)OC(C)(C)C)c(Br)c1 to produce CC(C)(C)OC(=O)Nc1ccc(NC(=O)OC(C)(C)C)c(C=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.