Chemically Talking, this molecule is "halfway" amongst Sorbitan Oleate and Sorbitan Trioleate, meaning that it's also an attachment of sorbitan (a dehydrated sorbitol (sugar) molecule) with the unsaturated fatty acid Oleic Acid, but in the ratio of two:three hence the "Sesqui" aspect from the molecule's title. Thanks to Nivea, Q10 is a pretty well