Chemically speaking, this molecule is "midway" concerning Sorbitan Oleate and Sorbitan Trioleate, indicating that it's also an attachment of sorbitan (a dehydrated sorbitol (sugar) molecule) with the unsaturated fatty acid Oleic Acid, but in a ratio of 2:3 for this reason the "Sesqui" component while in the molecule's title. If you like oil cleans