Using COC(C)(C)OC, CCOc1ccc(CCC[C@@H](C(=O)O)[C@H](O)C(=O)O)cc1 to produce CCOc1ccc(CCC[C@@H](C(=O)O)[C@@H]2OC(C)(C)OC2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.