Chemistry lecturer Sadie Otte German chemists鈥� successful synthesis of the molecule canataxpropellane, one of the world鈥檚 most complex natural products, in Chemistry World. The molecule鈥檚 structure provides several challenges to the process of synthesis, according to Otte, who did not participate in the research: 鈥淎 heptacyclic cage-like structure, twelve contiguous stereocentres, and six contiguous all-carbon quaternary centres鈥攖hese are each significant challenges in and of themselves.鈥�