Using CCOC(=O)CN, O=C=Nc1cc(Oc2ccc(C(F)(F)F)c(Cl)c2)ccc1[N+](=O)[O-] to produce CCOC(=O)CNC(=O)Nc1cc(Oc2ccc(C(F)(F)F)c(Cl)c2)ccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.