label: 21-hydroxyprogesterone + 2 reduced [adrenodoxin] + O2 + 2 H(+) <=> corticosterone + 2 oxidized [adrenodoxin] + H2O
label_lc: 21-hydroxyprogesterone + 2 reduced [adrenodoxin] + o2 + 2 h(+) <=> corticosterone + 2 oxidized [adrenodoxin] + h2o