Thermal ellipsoid model of the dodecahydroxycyclohexane molecule, C6H12O12, as found in the crystal structure of the dihydrate. The thermal ellipsoids are drawn at the 50% probability level, except hydrogen for which is just given a standard sphere.
Source: Wikimedia Commons (File: Dodecahydroxycyclohexane-from-dihydrate-xtal-CM-3D-ellipsoids.png).
One of the non-planar cyclic compounds.