Chemically speaking, this molecule is "midway" in between Sorbitan Oleate and Sorbitan Trioleate, meaning that it is also an attachment of sorbitan (a dehydrated sorbitol (sugar) molecule) with the unsaturated fatty acid Oleic Acid, but in the ratio of two:three for this reason the "Sesqui" portion from the molecule's identify. An AHA that origina