Using CCCn1c(=O)[nH]c2nc(C34CCC(C(=O)OC)(CC3)CC4)[nH]c2c1=O to produce CCCn1c(=O)[nH]c2nc(C34CCC(CO)(CC3)CC4)[nH]c2c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.