Using CN=C=O, Cc1[nH]nc(Oc2ccc(C(F)(F)F)cc2[N+](=O)[O-])c1C to produce CNC(=O)n1nc(Oc2ccc(C(F)(F)F)cc2[N+](=O)[O-])c(C)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.