Using O=CO, Cc1c([N+](=O)[O-])cc(C#N)c(N)c1[N+](=O)[O-] to produce Cc1c(NC=O)cc(C#N)c2nc[nH]c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.