Alpha linolenic acid is a polyunsaturated omega 3 fatty acid. It consists of 18 carbons and has three cis double bonds at the carbon 6, 9 and 12 positions. The image below shows the
model built 2 different ways. This kit, the 68829W biochemistry student set and the
68849W biochemistry class set come with "X" pegs and 120 degree planar carbon atoms to denote
double bonds and will produce a flattened representation.