Using COC(=O)c1ccc(OCC(O)c2cc3cc(C(C)(C)C)ccc3o2)cc1 to produce CC(C)(C)c1ccc2oc(C(O)COc3ccc(C(=O)O)cc3)cc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.