preferred_name: all-trans-beta-carotene + O2 = 2 all-trans-retinal
preferred_name_lc: all-trans-beta-carotene + o2 = 2 all-trans-retinal
label: all-trans-beta-carotene + O2 = 2 all-trans-retinal
label_lc: all-trans-beta-carotene + o2 = 2 all-trans-retinal