Using O=c1oc2cccc(OC(F)F)c2c2ccc([N+](=O)[O-])cc12 to produce Nc1ccc2c(c1)c(=O)oc1cccc(OC(F)F)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.