Using O=C(CCC(F)(F)F)c1cc(Cl)ccc1Br, N=C(N)NN to produce N=C(N)N/N=C(\CCC(F)(F)F)c1cc(Cl)ccc1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.