preferred_name: 9,9'-di-cis-zeta-carotene + 2 a quinone => 7,7',9,9'-tetra-cis-lycopene + 2 a quinol
preferred_name_lc: 9,9'-di-cis-zeta-carotene + 2 a quinone => 7,7',9,9'-tetra-cis-lycopene + 2 a quinol
label: 9,9'-di-cis-zeta-carotene + 2 a quinone => 7,7',9,9'-tetra-cis-lycopene + 2 a quinol
label_lc: 9,9'-di-cis-zeta-carotene + 2 a quinone => 7,7',9,9'-tetra-cis-lycopene + 2 a quinol