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