Using Cc1ccc(S(=O)(=O)OCC2CCN(C(=O)OC(C)(C)C)CC2)cc1, CCOC(=O)c1ccc(O)c(OC)c1 to produce CCOC(=O)c1ccc(OCC2CCN(C(=O)OC(C)(C)C)CC2)c(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.