Chemically Talking, this molecule is "midway" between Sorbitan Oleate and Sorbitan Trioleate, this means that it is 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 therefore the "Sesqui" component inside the molecule's name. I also like that this is in