Using CCOC(=O)CN1C(=S)C(C)(CC(=O)OCC)c2c1cccc2[N+](=O)[O-] to produce CCOC(=O)CN1CC(C)(CC(=O)OCC)c2c(N)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.