4-deoxy-L-threo-hex-4-enopyranuronate = 5-dehydro-4-deoxy-D-glucuronate
4-deoxy-l-threo-hex-4-enopyranuronate = 5-dehydro-4-deoxy-d-glucuronate
4-deoxy-L-threo-hex-4-enopyranuronate = 5-dehydro-4-deoxy-D-glucuronate
4-deoxy-l-threo-hex-4-enopyranuronate = 5-dehydro-4-deoxy-d-glucuronate