Using CC(=O)NCC1CN(c2ccc(C(CO)Cn3cc([N+](=O)[O-])nc3Br)c(F)c2)C(=O)O1 to produce CC(=O)NCC1CN(c2ccc(C3COc4nc([N+](=O)[O-])cn4C3)c(F)c2)C(=O)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.