Using Fc1ccccc1N1CCNCC1, Cc1nc(Br)c([N+](=O)[O-])c(=O)[nH]1 to produce Cc1nc(N2CCN(c3ccccc3F)CC2)c([N+](=O)[O-])c(=O)[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.