Using CCn1nc(Br)c2ncccc21, OB(O)c1ccc(B(O)O)cc1 to produce CCn1nc(-c2ccc(-c3nn(CC)c4cccnc34)cc2)c2ncccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.