7alpha,8alpha-epoxy-5alpha-cholestan-3beta-ol + oxidized [NADPH--hemoprotein reductase] + H2O + H(+) => lathosterol + reduced [NADPH--hemoprotein reductase] + O2
7alpha,8alpha-epoxy-5alpha-cholestan-3beta-ol + oxidized [nadph--hemoprotein reductase] + h2o + h(+) => lathosterol + reduced [nadph--hemoprotein reductase] + o2