Using Cc1nnc2n1-c1ccc(Br)cc1N(c1ccc(Cl)cc1)CC2, OB(O)c1ccccc1 to produce Cc1nnc2n1-c1ccc(-c3ccccc3)cc1N(c1ccc(Cl)cc1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.