Using Nc1ncc(Br)c(N2CCN(CC(=O)Nc3nccs3)CC2)c1[N+](=O)[O-], O=Cc1ccccc1 to produce O=C(CN1CCN(c2c(Br)cnc3[nH]c(-c4ccccc4)nc23)CC1)Nc1nccs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.