Chemically Talking, this molecule is "midway" between 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 inside of a ratio of 2:3 hence the "Sesqui" component from the molecule's name. A extremely multi-purposeful helpe