Using COc1ccc(C(=O)OCC(=O)OCc2ccccc2)cc1N(C(=O)OC(C)(C)C)S(C)(=O)=O to produce COc1ccc(C(=O)OCC(=O)O)cc1N(C(=O)OC(C)(C)C)S(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.