preferred_name: 2-oxobutanoate + L-kynurenine = 4-(2-aminophenyl)-2,4-dioxobutanoate + (2S)-2-aminobutanoate
preferred_name_lc: 2-oxobutanoate + l-kynurenine = 4-(2-aminophenyl)-2,4-dioxobutanoate + (2s)-2-aminobutanoate
label: 2-oxobutanoate + L-kynurenine = 4-(2-aminophenyl)-2,4-dioxobutanoate + (2S)-2-aminobutanoate
label_lc: 2-oxobutanoate + l-kynurenine = 4-(2-aminophenyl)-2,4-dioxobutanoate + (2s)-2-aminobutanoate