Using C#CCc1c(C)nc2c(OCc3c(C)cccc3NC(=O)C(C)=O)cccn12 to produce C#CCc1c(C)nc2c(OCc3c(C)cccc3NC(=O)C(C)O)cccn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.