Using COC(=O)CO, Cn1c(C(F)(F)F)ccc(-c2cc([N+](=O)[O-])c(F)cc2F)c1=O to produce COC(=O)COc1cc(F)c(-c2ccc(C(F)(F)F)n(C)c2=O)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.