3d image of secalonic acid a skeletal formula

secalonic acid chiral acid dimeric tetrahydroxanthone ergoflavin ergochrysin ergochrome mycotoxin ergot pigment fungi claviceps purpurea rye ergotism ergot alkaloid enantiomer penicillium oxalicum microbial contaminant phoma terrestris pyrenochaeta aspergillus aculeatus secondary metabolite antitumor anti-cancer anticancer colchicines dopaminergic neuron death parkinson's disease antimicrobial antifungal antialgal synthesis 3d poison venom toxicant toxic toxicity toxin toxicology poisoning danger hazard antidote intoxication detoxification