Using CCOC(=O)c1ccc(-c2cc(Oc3ccc(S(C)(=O)=O)cc3)cc(O[C@@H](C)COC)c2)[nH]1 to produce COC[C@H](C)Oc1cc(Oc2ccc(S(C)(=O)=O)cc2)cc(-c2ccc(C(=O)O)[nH]2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.