Using O=C(Cl)c1cccc(C(F)(F)F)c1, Nc1cccc([N+](=O)[O-])c1 to produce O=C(Nc1cccc([N+](=O)[O-])c1)c1cccc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.