preferred_name: 3-methyl-2-oxobutanoate + L-isoleucine => (S)-3-methyl-2-oxopentanoate + L-valine
preferred_name_lc: 3-methyl-2-oxobutanoate + l-isoleucine => (s)-3-methyl-2-oxopentanoate + l-valine
label: 3-methyl-2-oxobutanoate + L-isoleucine => (S)-3-methyl-2-oxopentanoate + L-valine
label_lc: 3-methyl-2-oxobutanoate + l-isoleucine => (s)-3-methyl-2-oxopentanoate + l-valine