Using NOCc1ccccc1, O=C(O)c1cc(F)c(F)cc1Nc1ccc(F)cc1F to produce O=C(NOCc1ccccc1)c1cc(F)c(F)cc1Nc1ccc(F)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.