label: (24R)-hydroxycholesterol + reduced [NADPH--hemoprotein reductase] + O2 = (24R)-7alpha-dihydroxycholesterol + oxidized [NADPH--hemoprotein reductase] + H2O + H(+)
label_lc: (24r)-hydroxycholesterol + reduced [nadph--hemoprotein reductase] + o2 = (24r)-7alpha-dihydroxycholesterol + oxidized [nadph--hemoprotein reductase] + h2o + h(+)