This is a 3D printed model of Thiamine (Vitamin B1), C12H14N4OS. The atoms are 3D printed in the correct ratios based on data from the Cambridge Crystallographic Database. The model is mounted on an applewood base together with a wooden apple of the same wood. Thiamine, or vitamin B1, is a water-soluble vitamin found naturally in some foods, added to foods, and sold as a supplement. Thiamine plays a vital role in the growth and function of various cells. Only small amounts are stored in the liver, so a daily intake of thiamine-rich foods is needed.
The Chemistry of Apples is an interesting article too. The Thiamine molecule is one of around 300 substances contained in an apple.
The model is about 24cm high, 18cm wide, 10cm deep. More about Thiamine you can read on Wikipedia.
Read this blog post to see how I make the atoms and build molecules: 3D printed atoms.