Using BrCCCCCCCc1cccc(OCc2ccccc2)c1, O=S([O-])[O-] to produce O=S(=O)([O-])CCCCCCCc1cccc(OCc2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.