Chemically speaking, this molecule is "halfway" in between 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:three as a result the "Sesqui" part within the molecule's name. I also like that this is