Using O=Cc1ccc(O)cc1, Nc1c([N+](=O)[O-])cc(F)c(F)c1F to produce Nc1c([N+](=O)[O-])cc(F)c(Oc2ccc(C=O)cc2)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.