Using CC(C)(O)c1cnn2c(Br)cnc2n1, OB(O)c1ccc(F)c(-c2ccncc2)c1F to produce CC(C)(O)c1cnn2c(-c3ccc(F)c(-c4ccncc4)c3F)cnc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.