Using O=C(Nc1nccs1)C(CC1CCCC1)c1ccc(Br)cc1, OB(O)c1cccs1 to produce O=C(Nc1nccs1)C(CC1CCCC1)c1ccc(-c2cccs2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.