Using O=S([O-])S(=O)(=O)[O-], COc1cc(Br)cc(N2CCSCC2)c1 to produce COc1cc(Br)cc(N2CCS(=O)(=O)CC2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.