3d image of quinolizidine skeletal formula

quinolizidine alkaloid secondary seed norlupinane lipinine lupins nymphaea lotus nymphaeaceae genistoid legume bitter lupine qa 3d chemical biochemistry biology molecule molecular structural structure formula skeletal geometry substance compound group herbal phytochemicals phytotherapy plant metabolite metabolism biosynthesis synthesis mechanism pathway natural heterocyclic heterocycle ring poison toxic toxicity toxin poisoning