Using O=C([O-])[O-], CC(=O)Nc1c(C)cc2c(nc3n2CCC3CC(=O)[O-])c1[N+](=O)[O-] to produce CC(=O)Nc1c(C)cc2c(nc3n2CCC3O)c1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.