Using CCOC(=O)c1c(-c2ccc(OCc3ccccc3)cc2)c(C#N)c(C(F)(F)F)n1C to produce CCOC(=O)c1c(-c2ccc(O)cc2)c(C#N)c(C(F)(F)F)n1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.