Using CON(C)C(C)=O, CC(C)(C)OC(=O)N1CCOc2ccc(Br)cc2C1 to produce CC(=O)c1ccc2c(c1)CN(C(=O)OC(C)(C)C)CCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.