Using CC(C)(C)OC(=O)N1CCC(O)(c2cc(CO)c3ccccc3c2)CC1 to produce CC(C)(C)OC(=O)N1CCC(O)(c2cc(C=O)c3ccccc3c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.