Using COC(=O)c1cc(OC[C@H]2COC(C)(C)O2)cc(C(=O)OC)c1 to produce CC1(C)OC[C@H](COc2cc(C(=O)O)cc(C(=O)O)c2)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.