preferred_name: 3-carboxy-2-oxobutanoate + H(+) => 2-oxobutanoate + CO2
preferred_name_lc: 3-carboxy-2-oxobutanoate + h(+) => 2-oxobutanoate + co2
label: 3-carboxy-2-oxobutanoate + H(+) => 2-oxobutanoate + CO2
label_lc: 3-carboxy-2-oxobutanoate + h(+) => 2-oxobutanoate + co2