Using ON=Cc1ccccc1, CCOC(=O)C#Cc1cc(Cl)ccc1C(C)(C#N)C(=O)OCC to produce CCOC(=O)C1=C(O)c2cc(Cl)ccc2C(C)(C#N)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.