preferred_name: 2-oxobutanoate + L-histidine => 3-(imidazol-5-yl)pyruvate + (2S)-2-aminobutanoate
preferred_name_lc: 2-oxobutanoate + l-histidine => 3-(imidazol-5-yl)pyruvate + (2s)-2-aminobutanoate
label: 2-oxobutanoate + L-histidine => 3-(imidazol-5-yl)pyruvate + (2S)-2-aminobutanoate
label_lc: 2-oxobutanoate + l-histidine => 3-(imidazol-5-yl)pyruvate + (2s)-2-aminobutanoate