Using COc1cc(O)c(C(C)=O)c(OC)c1, CCOC(=O)C(C)(C)C#N to produce COc1cc(O)c(C(=O)CC(=O)C(C)(C)C#N)c(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.