3d image of fustin skeletal formula

fustin dihydrofisetin 3-dihydrofisetin trihydroxyflavanol tetrahydroxyflavanone flavanonol flavonoid young fustic cotinus coggygria lacquer tree toxicodendron vernicifluum neuronal cell death c-ring flavan stereocenter stereoisomer 3d supplement biological activity bioactive nutrient prescription drug food additive nutraceutica dietary vitamin antioxidant anti-cancer anti-aging healthy aging alternative medicine tcm traditional chinese herbal herbal phytochemical phytotherapy plant herb natural herbalism pharmacognosy pharmacopoeia parasympathomimetic alkaloid phytoalexin