label: 4,4-dimethyl-8,14-cholestadien-3beta-ol + NADPH + H(+) => 4,4-dimethyl-5alpha-cholest-8-en-3beta-ol + NADP(+)
label_lc: 4,4-dimethyl-8,14-cholestadien-3beta-ol + nadph + h(+) => 4,4-dimethyl-5alpha-cholest-8-en-3beta-ol + nadp(+)