preferred_name: 15-cis-phytoene + A => all-trans-phytofluene + AH2
preferred_name_lc: 15-cis-phytoene + a => all-trans-phytofluene + ah2
label: 15-cis-phytoene + A => all-trans-phytofluene + AH2
label_lc: 15-cis-phytoene + a => all-trans-phytofluene + ah2