preferred_name: 2-oxobutanoate + NH4(+) => (2S)-2-amino-3-butenoate + H2O
preferred_name_lc: 2-oxobutanoate + nh4(+) => (2s)-2-amino-3-butenoate + h2o
label: 2-oxobutanoate + NH4(+) => (2S)-2-amino-3-butenoate + H2O
label_lc: 2-oxobutanoate + nh4(+) => (2s)-2-amino-3-butenoate + h2o