Using O, CCCCCC[C@H](C)Oc1cc(N(C)C)c(CC(=O)[O-])cc1[N+](=O)[O-] to produce CCCCCC[C@H](C)Oc1cc(N(C)C)c(O)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.