Using CC(=O)O, CC(C)c1ccc2c(c1)OCc1ccc(C#N)cc1C2=O to produce CC(C)c1ccc2c(c1)OCc1ccc(C(=O)O)cc1C2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.