This is the skeletal formula for caffeine, completely made out of Lego. “Caffeine” is created by Miro Dudas as an entry into the 2nd round of Iron Builders. The challenge this time is to use the wrench and hammer pieces in unique ways. The skeletal formula is where you will find all these pieces, specifically in the covalent bonds. A bunch of blue spaceman Minifigure helmets, and round Lego balls make up the individual molecules (correct me if I am wrong). It would tough to get all of these elements in the correct places, and here it has been achieved well. This Lego MOC also features a cup of coffee (humanities preferred source of the drug), which is probably the inspiration of this build.
For more information you can check out “Caffeine,” created by Miro Dudas over here: https://www.flickr.com/photos/miro78/49852922072/