preferred_name: bacterioruberin => bisanhydrobacterioruberin + 2 H2O
preferred_name_lc: bacterioruberin => bisanhydrobacterioruberin + 2 h2o
label: bacterioruberin => bisanhydrobacterioruberin + 2 H2O
label_lc: bacterioruberin => bisanhydrobacterioruberin + 2 h2o