preferred_name: L,L-cystathionine + H2O => L-homocysteine + L-serine
preferred_name_lc: l,l-cystathionine + h2o => l-homocysteine + l-serine
label: L,L-cystathionine + H2O => L-homocysteine + L-serine
label_lc: l,l-cystathionine + h2o => l-homocysteine + l-serine