Using COc1ccc(-c2nc(CCC(=O)c3ncccc3C)co2)cc1O, FC(F)(F)CI to produce COc1ccc(-c2nc(CCC(=O)c3ncccc3C)co2)cc1OCC(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.