Using CCOC(=O)CCCCCCC(=O)c1ccc(Br)cc1, OB(O)c1ccsc1 to produce CCOC(=O)CCCCCCC(=O)c1ccc(-c2ccsc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.