Chemically speaking, this molecule is "halfway" among Sorbitan Oleate and Sorbitan Trioleate, which means that it is also an attachment of sorbitan (a dehydrated sorbitol (sugar) molecule) with the unsaturated fatty acid Oleic Acid, but in a very ratio of two:3 hence the "Sesqui" aspect while in the molecule's name. An AHA that emanates from citru