preferred_name: 4-methyl-2-oxopentanoate + L-alanine => L-leucine + pyruvate
preferred_name_lc: 4-methyl-2-oxopentanoate + l-alanine => l-leucine + pyruvate
label: 4-methyl-2-oxopentanoate + L-alanine => L-leucine + pyruvate
label_lc: 4-methyl-2-oxopentanoate + l-alanine => l-leucine + pyruvate