Using O=C(c1ccccc1)c1ccccc1N(CCCN1C(=O)c2ccccc2C1=O)c1ncccc1[N+](=O)[O-] to produce NCCCN(c1ccccc1C(=O)c1ccccc1)c1ncccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.