The year is 1985. Windows 1.0 has just been released in North America, and the first Back to the Future film is playing in cinemas. Chemists worldwide who need to draw chemical structures have no choice but to use a combination of freehand drawing, stencils, and dry-transfer letter decals. However, a former high school science teacher, a Harvard PhD student and a chemistry professor are about to revolutionise how chemists depict molecules.