label: (1S)-1,23-dihydroxy-24,25,26,27-tetranorcalciol + 2 reduced [adrenodoxin] + O2 + 2 H(+) <=> (1S)-1-hydroxy-23-oxo-24,25,26,27-tetranorcalciol + 2 oxidized [adrenodoxin] + 2 H2O
label_lc: (1s)-1,23-dihydroxy-24,25,26,27-tetranorcalciol + 2 reduced [adrenodoxin] + o2 + 2 h(+) <=> (1s)-1-hydroxy-23-oxo-24,25,26,27-tetranorcalciol + 2 oxidized [adrenodoxin] + 2 h2o