Using OB(O)c1ccc(F)cc1, NC(=O)c1cc(Br)cc2c(C3CCS(=O)(=O)C3)c[nH]c12 to produce NC(=O)c1cc(-c2ccc(F)cc2)cc2c(C3CCS(=O)(=O)C3)c[nH]c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.