Using CC(Oc1ccc(Oc2ccc(Cl)cc2Cl)cc1)C(=O)Cl, CCOC(=O)CC(=O)OCC to produce CCOC(=O)C(C(=O)OCC)C(=O)C(C)Oc1ccc(Oc2ccc(Cl)cc2Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.