Using CCc1nc(C(F)(F)F)nc2c1ncn2-c1ccc(OCc2ccccc2)cc1 to produce CCc1nc(C(F)(F)F)nc2c1ncn2-c1ccc(O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.