Using O=[N+]=O, CN1CCC(c2nc(-c3ccncc3)cc(=O)n2C)CC1 to produce CN1CCC(c2nc(-c3ccncc3)c([N+](=O)[O-])c(=O)n2C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.