Using O=C(CN1CCCC1)N1CCSc2ccc([N+](=O)[O-])cc21 to produce O=[N+]([O-])c1ccc2c(c1)N(CCN1CCCC1)CCS2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.