3beta-hydroxy-5alpha-androstane-7,17-dione + NADPH + H(+) = 3beta,7beta-dihydroxy-5alpha-androstan-17-one + NADP(+)
3beta-hydroxy-5alpha-androstane-7,17-dione + nadph + h(+) = 3beta,7beta-dihydroxy-5alpha-androstan-17-one + nadp(+)