Using CCOC(=O)C(CCCc1ccccc1)(Cc1ccc(OCc2ccccc2)cc1)C(=O)OCC to produce O=C(O)C(CCCc1ccccc1)Cc1ccc(OCc2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.