Using COC(=O)COc1ccc([C@H]2c3ccc(O)cc3OC[C@H]2c2ccccc2)cc1 to produce O=C(O)COc1ccc([C@H]2c3ccc(O)cc3OC[C@H]2c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.