Using O=C(Nc1ccccc1)c1c(CN2CCOCC2)cccc1[N+](=O)[O-] to produce Nc1cccc(CN2CCOCC2)c1C(=O)Nc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.