Using COc1ccc2c(c1)S(=O)(=O)C(Br)=C2Oc1ccc(Br)cc1 to produce COc1ccc2c(c1)S(=O)(=O)C=C2Oc1ccc(Br)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.