Using CCOC(=O)[C@H](Cc1ccc(CCOc2ccc(OS(C)(=O)=O)cc2)cc1)OCC to produce CCO[C@@H](Cc1ccc(CCOc2ccc(OS(C)(=O)=O)cc2)cc1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.