Using c1nc[nH]n1, O=c1ccc2cc(C(Cl)c3cccc(C(F)(F)F)c3)ccc2[nH]1 to produce O=c1ccc2cc(C(c3cccc(C(F)(F)F)c3)n3cncn3)ccc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.