Using O=S(=O)(O)c1cc(Br)ccc1Br, CC(=O)N(C)C to produce O=S(=O)(O)c1cc(Br)ccc1-c1ccc(Br)cc1S(=O)(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.