Using OB(O)c1cccnc1, O[C@@H]1CCCC[C@H]1Nc1nc2ccc(Cn3cnc4cc(Br)cnc43)cc2s1 to produce O[C@@H]1CCCC[C@H]1Nc1nc2ccc(Cn3cnc4cc(-c5cccnc5)cnc43)cc2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.