preferred_name: protoporphyrinogen IX + 3 O2 => protoporphyrin IX + 3 H2O2
preferred_name_lc: protoporphyrinogen ix + 3 o2 => protoporphyrin ix + 3 h2o2
label: protoporphyrinogen IX + 3 O2 => protoporphyrin IX + 3 H2O2
label_lc: protoporphyrinogen ix + 3 o2 => protoporphyrin ix + 3 h2o2