Using CC1(C)OB(B2OC(C)(C)C(C)(C)O2)OC1(C)C, Cn1cc(Br)nc(Nc2cccnc2)c1=O to produce Cn1cc(B(O)O)nc(Nc2cccnc2)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.