Chemically Talking, this molecule is "midway" among 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 of a ratio of two:three as a result the "Sesqui" part from the molecule's name. Turmeric would be the yellow