Using Cn1nc(C(C)(C)C)cc1-c1nc2cc(Br)ncc2[nH]1, OB(O)c1ccccc1Cl to produce Cn1nc(C(C)(C)C)cc1-c1nc2cc(-c3ccccc3Cl)ncc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.