Using OB(O)c1cccnc1, CONCc1nc2c(N)nc3cc(Br)cnc3c2n1CC(C)(C)O to produce CONCc1nc2c(N)nc3cc(-c4cccnc4)cnc3c2n1CC(C)(C)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.