Using COC(=O)c1ccc(OC)c(OC)c1OC, Cc1c(Cl)cncc1Cl to produce COc1ccc(C(=O)Cc2c(Cl)cncc2Cl)c(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.