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