Posner's Molecule, Ca9(PO4)6. This molecule was proposed by Prof. Matthew Fisher as a molecule which could host "neural qbits" in the form of phosphorus nuclear spins, leading to the possibility of "quantum cognition" or "quantum memory" in the brain*. Large spheres represent calcium ions, medium spheres represent phosphorus ions, and small spheres represent oxygen ions.
* M.P.A. Fisher, Ann. Phys. 362, 593–602 (2015)