Chemically Talking, 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 consequently the "Sesqui" part during the molecule's identify. An AHA that arises from