Using O=C1NC2(CCCC2)Nc2cc(Br)sc21, CC1(C)OB(c2cn[nH]c2)OC1(C)C to produce O=C1NC2(CCCC2)Nc2cc(-c3cn[nH]c3)sc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.