Using O=C1c2ccc(Cl)cc2CCN1c1cncc(Br)c1, CC1(C)OB(c2cn[nH]c2)OC1(C)C to produce O=C1c2ccc(Cl)cc2CCN1c1cncc(-c2cn[nH]c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.