Using CCC(Cc1ccc(O)cc1)C(=O)OC, COCc1ccc(CCO)cc1 to produce CCC(Cc1ccc(OCCc2ccc(COC)cc2)cc1)C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.