Using CCOC(C)=O, COC(=O)c1cc2cc(Oc3ccc(S(C)(=O)=O)nc3)cc(O)c2[nH]1 to produce COC(=O)c1cc2cc(Oc3ccc(S(C)(=O)=O)nc3)cc(OC)c2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.