Using O=C(OCc1ccccc1)N1CCCC(CBr)C1, O=S([O-])[O-] to produce O=C(OCc1ccccc1)N1CCCC(CS(=O)(=O)O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.