Using CCOC(=O)C1Cc2c([nH]c3cc([N+](=O)[O-])ccc23)CN1 to produce CCOC(=O)c1cc2c(cn1)[nH]c1cc([N+](=O)[O-])ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.