preferred_name: protoporphyrin IX + 3 a menaquinol => protoporphyrinogen IX + 3 a menaquinone
preferred_name_lc: protoporphyrin ix + 3 a menaquinol => protoporphyrinogen ix + 3 a menaquinone
label: protoporphyrin IX + 3 a menaquinol => protoporphyrinogen IX + 3 a menaquinone
label_lc: protoporphyrin ix + 3 a menaquinol => protoporphyrinogen ix + 3 a menaquinone