Using O=N[O-], Nc1ncc(Br)nc1NCc1c(F)cc2ncccc2c1F to produce Fc1cc2ncccc2c(F)c1Cn1nnc2ncc(Br)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.