Using O=[N+]([O-])c1ccc2c(c1)CCN(Cc1cc3cc([N+](=O)[O-])ccc3o1)CC2 to produce Nc1ccc2c(c1)CCN(Cc1cc3cc(N)ccc3o1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.