label: androst-4-ene-3,17-dione + NADH + O2 + H(+) = 9alpha-hydroxy-androst-4-ene-3,17-dione + NAD(+) + H2O
label_lc: androst-4-ene-3,17-dione + nadh + o2 + h(+) = 9alpha-hydroxy-androst-4-ene-3,17-dione + nad(+) + h2o