Using O=S(=O)(c1ccccc1)n1cc(I)c2cc(Br)cnc21, OB(O)c1ccccc1 to produce O=S(=O)(c1ccccc1)n1cc(-c2ccccc2)c2cc(Br)cnc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.