preferred_name: hydroxymethylbilane + 4 NH4(+) => 4 porphobilinogen + H2O
preferred_name_lc: hydroxymethylbilane + 4 nh4(+) => 4 porphobilinogen + h2o
label: hydroxymethylbilane + 4 NH4(+) => 4 porphobilinogen + H2O
label_lc: hydroxymethylbilane + 4 nh4(+) => 4 porphobilinogen + h2o