Using O=C(NCc1cc(F)c(Cl)c([N+](=O)[O-])c1)C1(C(F)(F)F)CC1 to produce Nc1cc(CNC(=O)C2(C(F)(F)F)CC2)cc(F)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.