Using O=C(Nc1nonc1-c1noc(=O)n1-c1ccc(F)c(Br)c1)c1nnn[nH]1 to produce ON=C(Nc1ccc(F)c(Br)c1)c1nonc1NCc1nnn[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.