Using CC1(C)OC(=O)C(=Cc2ccc(Br)cc2)C(=O)O1, C[S+](C)(C)=O to produce CC1(C)OC(=O)C2(CC2c2ccc(Br)cc2)C(=O)O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.