Using COB(OC)OC, CNc1nc(C)c2cc(Br)c(=O)n(C3CCCC3)c2n1 to produce CNc1nc(C)c2cc(B(O)O)c(=O)n(C3CCCC3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.