preferred_name: Fe(II)-hydroxyheme i + AH2 => Fe(II)-heme i + A + H2O
preferred_name_lc: fe(ii)-hydroxyheme i + ah2 => fe(ii)-heme i + a + h2o
label: Fe(II)-hydroxyheme i + AH2 => Fe(II)-heme i + A + H2O
label_lc: fe(ii)-hydroxyheme i + ah2 => fe(ii)-heme i + a + h2o