Using O=C(NCCc1ccc(Cl)c(Cl)c1)c1ccc(C(O)(C(F)(F)F)C(F)(F)F)cc1 to produce OC(c1ccc(CNCCc2ccc(Cl)c(Cl)c2)cc1)(C(F)(F)F)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.