beta-amyrin + reduced [NADPH--hemoprotein reductase] + O2 <=> erythrodiol + oxidized [NADPH--hemoprotein reductase] + H2O + H(+)
beta-amyrin + reduced [nadph--hemoprotein reductase] + o2 <=> erythrodiol + oxidized [nadph--hemoprotein reductase] + h2o + h(+)