preferred_name: porphobilinogen + 2 H2O + H(+) => 2 5-aminolevulinate
preferred_name_lc: porphobilinogen + 2 h2o + h(+) => 2 5-aminolevulinate
label: porphobilinogen + 2 H2O + H(+) => 2 5-aminolevulinate
label_lc: porphobilinogen + 2 h2o + h(+) => 2 5-aminolevulinate