Using CCOC(=O)[C@H]1[C@@H](CCOCOCc2ccccc2)CCN1C(=O)OCC to produce CCOC(=O)[C@H]1[C@H](CCOCOCc2ccccc2)CCN1C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.