Using C[N+](=O)[O-], CC(C)(C)OC(=O)N1CCc2c(C=O)c3ccccc3n2CC1 to produce CC(C)(C)OC(=O)N1CCc2c(/C=C/[N+](=O)[O-])c3ccccc3n2CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.