Chemically Talking, this molecule is "midway" involving Sorbitan Oleate and Sorbitan Trioleate, which means that it's also an attachment of sorbitan (a dehydrated sorbitol (sugar) molecule) with the unsaturated fatty acid Oleic Acid, but inside a ratio of 2:3 hence the "Sesqui" element inside the molecule's identify. The emollient plant oil coming