preferred_name: 2-hydroxy-4-aminobutanoate => (S)-azetidine-2-carboxylate + H2O
preferred_name_lc: 2-hydroxy-4-aminobutanoate => (s)-azetidine-2-carboxylate + h2o
label: 2-hydroxy-4-aminobutanoate => (S)-azetidine-2-carboxylate + H2O
label_lc: 2-hydroxy-4-aminobutanoate => (s)-azetidine-2-carboxylate + h2o