label: 20S-hydroxycholecalciferol + 2 reduced [adrenodoxin] + O2 + 2 H(+) => 20S,25-dihydroxycholecalciferol + 2 oxidized [adrenodoxin] + H2O
label_lc: 20s-hydroxycholecalciferol + 2 reduced [adrenodoxin] + o2 + 2 h(+) => 20s,25-dihydroxycholecalciferol + 2 oxidized [adrenodoxin] + h2o