Using CCOC(=O)c1cc(OC)cc(OC)c1, CC(=O)c1ccc(O)cc1O to produce COc1cc(OC)cc(C(=O)CC(=O)c2ccc(O)cc2O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.