3d image of moroidin skeletal formula

moroidin dendrocnide moroides celosia argentea peptide amino acids anti-mitotic inhibition tubulin polymerization chemotherapy drug organic synthesis bicyclic octapeptide x-ray crystallography crosslinks total radical conjugate addition nitro reduction knoevenagel condensation stinging toxin skin pain microtubules mitotic apparatus checkpoint 3d herbal phytochemical phytotherapy plant herb natural herbalism pharmacognosy pharmacopoeia poison venom toxicant toxic toxicity toxicology poisoning danger hazard irritant acute exposure antidote intoxication detoxification