label: a 4alpha-methyl-3-oxosteroid + CO2 + NADH => a 3beta-hydroxy-4alpha-methylsteroid-4beta-carboxylate + NAD(+)
label_lc: a 4alpha-methyl-3-oxosteroid + co2 + nadh => a 3beta-hydroxy-4alpha-methylsteroid-4beta-carboxylate + nad(+)