6-sulfo-beta-D-quinovose <=> 6-deoxy-6-sulfo-D-fructose
6-sulfo-beta-d-quinovose <=> 6-deoxy-6-sulfo-d-fructose
6-sulfo-beta-D-quinovose <=> 6-deoxy-6-sulfo-D-fructose
6-sulfo-beta-d-quinovose <=> 6-deoxy-6-sulfo-d-fructose