Using CCc1c(C=O)[nH]c(=O)c(I)c1Oc1cc(C)cc(C)c1 to produce CCc1c(CO)[nH]c(=O)c(I)c1Oc1cc(C)cc(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.