Using O=S(=O)(c1ccccc1)N(F)S(=O)(=O)c1ccccc1, O=C(Nc1ncc(Br)s1)C(F)(F)F to produce O=C(Nc1ncc(F)s1)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.