Using FC(F)(F)c1ccc(OCCCOc2c(Cl)cc(OCc3ccccc3)cc2Cl)nc1 to produce Oc1cc(Cl)c(OCCCOc2ccc(C(F)(F)F)cn2)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.