Using CN(C(=O)OC(C)(C)C)C1CCN(c2ccc3ncc(Br)n3n2)C1, OB(O)c1ccncc1 to produce CN(C(=O)OC(C)(C)C)C1CCN(c2ccc3ncc(-c4ccncc4)n3n2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.