Using CCOC=C(C(=O)OCC)C(=O)c1c(F)c(Cl)c(F)c(F)c1[N+](=O)[O-], NC1CC1 to produce CCOC(=O)c1cn(C2CC2)c2c(Cl)c(F)c(F)c([N+](=O)[O-])c2c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.