American Chemical Society. "12 Million Molecules Share 143 Basic Shapes, Researchers Find." ScienceDaily. www.sciencedaily.com / releases / 2008 / 06 / 080623093425.htm (accessed May 18, 2025).

They found that more than half are built from just 143 basic shapes, or "frameworks." And the rest? Well, building those requires the other 836,565 cataloged frameworks.