Using ClCc1ccc(Cl)cc1, COC(=O)CCC(C(=O)c1cccc(O)c1)c1ccccc1C to produce COC(=O)CCC(C(=O)c1cccc(OCc2ccc(Cl)cc2)c1)c1ccccc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.