Using O=C(NN=C(CNC(=O)c1ccccc1)c1cccc(Cl)c1)Nc1ccc(OC(F)(F)F)cc1, Cl to produce O=C(NNC(CNC(=O)c1ccccc1)c1ccc(Cl)cc1)Nc1ccc(OC(F)(F)F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.