Using O=c1n(-c2ccc(OC(F)(F)F)cc2)ccn1-c1ccc([N+](=O)[O-])cc1 to produce Nc1ccc(N2CCN(c3ccc(OC(F)(F)F)cc3)C2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.