3d image of stigmasterol skeletal formula

stigmasterol plant sterol phytosterol stigmasterin wulzen anti-stiffness factor physiology cell membranes food additive number e499 ldl cholesterol unsaturated ophiopogon japonicus chinese herbs mirabilis jalapa precursor boldenone progesterone rendering supplement biological activity bioactive nutrient nutraceutica dietary healthy aging alternative medicine tcm traditional herbal herbal phytochemical phytotherapy herb natural herbalism pharmacognosy pharmacopoeia plant molecule molecular formula skeletal structural structure geometry ball stick