Using CCOC(=O)c1c(C=O)c(C(C)(C)C)n(CCc2ccc(F)cc2)c1C to produce CCOC(=O)c1c(CO)c(C(C)(C)C)n(CCc2ccc(F)cc2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.