preferred_name: 4,4-dihydroxy-all-trans-beta-carotene => echinenone + H2O
preferred_name_lc: 4,4-dihydroxy-all-trans-beta-carotene => echinenone + h2o
label: 4,4-dihydroxy-all-trans-beta-carotene => echinenone + H2O
label_lc: 4,4-dihydroxy-all-trans-beta-carotene => echinenone + h2o