preferred_name: 2-dehydro-D-erythronate <=> 3-dehydro-D-erythronate
preferred_name_lc: 2-dehydro-d-erythronate <=> 3-dehydro-d-erythronate
label: 2-dehydro-D-erythronate <=> 3-dehydro-D-erythronate
label_lc: 2-dehydro-d-erythronate <=> 3-dehydro-d-erythronate