Using CC(C)(C)OC(=O)N1CCC2(CC1)CCN(C1=C(C=O)C(=O)OC1)C2=O to produce CC(C)(C)OC(=O)N1CCC2(CC1)CCN(C1=C(CO)C(=O)OC1)C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.