Using CC(=O)OC(C)=O, Clc1ccc2c(c1)NCc1cc(Br)ccc1CO2 to produce CC(=O)N1Cc2cc(Br)ccc2COc2ccc(Cl)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.