Chemically speaking, this molecule is "halfway" amongst Sorbitan Oleate and Sorbitan Trioleate, this 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 two:3 for this reason the "Sesqui" part within the molecule's identify. It's also a potent ant