Using O=C(Nc1cccc(C(F)(F)F)c1)c1ccc(Cl)c(-c2cccc([N+](=O)[O-])c2)c1 to produce Nc1cccc(-c2cc(C(=O)Nc3cccc(C(F)(F)F)c3)ccc2Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.