Using OB(O)c1ccsc1, C[C@H](Nc1nccc(-n2cc(Br)nc2-c2ccc(F)cc2)n1)c1ccccc1 to produce C[C@H](Nc1nccc(-n2cc(-c3ccsc3)nc2-c2ccc(F)cc2)n1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.