Using O=C1CCCCC1c1nc2ccccc2c([N+](=O)[O-])c1N1CCCCC1 to produce Nc1c(N2CCCCC2)c(C2CCCCC2=O)nc2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.