Using CC(CBr)OC1=C(c2ccc(S(C)(=O)=O)cc2)C(C)(C)OC1=O to produce C=C(C)OC1=C(c2ccc(S(C)(=O)=O)cc2)C(C)(C)OC1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.