preferred_name: ornithine => putrescine + CO2 (Caenorhabditis elegans)
preferred_name_lc: ornithine => putrescine + co2 (caenorhabditis elegans)
label: ornithine => putrescine + CO2 (Caenorhabditis elegans)
label_lc: ornithine => putrescine + co2 (caenorhabditis elegans)