Using COC(=O)C(C)(C)CCCCl, O=C(c1ccc(O)cc1)c1ccc(Cl)cc1 to produce COC(=O)C(C)(C)CCCOc1ccc(C(=O)c2ccc(Cl)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.