preferred_name: ornithine => putrescine + CO2 (Dictyostelium discoideum)
preferred_name_lc: ornithine => putrescine + co2 (dictyostelium discoideum)
label: ornithine => putrescine + CO2 (Dictyostelium discoideum)
label_lc: ornithine => putrescine + co2 (dictyostelium discoideum)