Using C#CCN1CCC2(CC1)c1ccccc1Oc1c(OC(C)=O)cccc12 to produce C#CCN1CCC2(CC1)c1ccccc1Oc1c(O)cccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.