Using CCCCCCN1CC2C(C1=O)C2(C)c1cccc(N)c1, O=N[O-] to produce CCCCCCN1CC2C(C1=O)C2(C)c1cccc(O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.