label: a 3beta-hydroxy-4beta-formyl-4alpha-methylsteroid + NADH + O2 => a 3beta-hydroxy-4alpha-methylsteroid-4beta-carboxylate + NAD(+) + H2O
label_lc: a 3beta-hydroxy-4beta-formyl-4alpha-methylsteroid + nadh + o2 => a 3beta-hydroxy-4alpha-methylsteroid-4beta-carboxylate + nad(+) + h2o