label: all-trans-retinol--[retinol-binding protein] + NAD(+) = all-trans-retinal--[retinol-binding protein] + NADH + H(+)
label_lc: all-trans-retinol--[retinol-binding protein] + nad(+) = all-trans-retinal--[retinol-binding protein] + nadh + h(+)