Using CC(C)(C)C(=O)C(Br)C(c1ccc(Cl)cc1Cl)S(=O)(=O)c1ccccc1 to produce CC(C)(C)C(=O)C=C(c1ccc(Cl)cc1Cl)S(=O)(=O)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.