Using NC(=O)C1CCN(c2ccncc2Br)CC1, OB(O)c1cn[nH]c1 to produce NC(=O)C1CCN(c2ccncc2-c2cn[nH]c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.