Using CC(=O)Oc1c(C(C)(C)C)cc(OC2CCCCO2)c(C)c1C(C)(C)C to produce CC(=O)Oc1c(C(C)(C)C)cc(O)c(C)c1C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.