Question: The Bergamot essential oil often used in perfumes is found in what furanocoumarin from grapefruit juice?
Context: 6',7'-Dihydroxybergamottin is a natural furanocoumarin found principally in grapefruit juice.  Along with the chemically related compound bergamottin, it is believed to be responsible for a number of grapefruit–drug interactions, in which the consumption of the juice affects the metabolism of a variety of pharmaceutical drugs. Bergapten (5-methoxypsoralen) is a psoralen (also known as furocoumarins) found in bergamot essential oil, in other citrus essential oils, and in grapefruit juice.  It is the chemical in bergamot oil that causes phototoxicity.  Bergapten-free bergamot essential oil or synthetics are now used in perfumery. Bergamottin is a natural furanocoumarin found principally in grapefruit juice.  It is also found in the oil of bergamot orange, from which it was first isolated and from which its name is derived.  To a lesser extent, bergamottin is also present in the essential oils of other citrus fruits.  Along with the chemically related compound 6',7'-dihydroxybergamottin, it is believed to be responsible for the grapefruit juice effect, in which the consumption of the juice affects the metabolism of a variety of pharmaceutical drugs. Bergamot essential oil is a cold-pressed essential oil produced by cells inside the rind of a bergamot orange fruit.  It is a common top note in perfumes. Cannabis flower essential oil, also known as hemp essential oil, is an essential oil obtained by steam distillation from the flowers and upper leaves of the hemp plant (Cannabis sativa L.) Hemp essential oil is distinct from hemp seed oil, hemp oil and hash oil: the former is a vegetable oil that is pressed from the seeds of low-THC varieties of hemp, the latter is a THC-rich extract of dried female hemp flowers (marijuana) or resin (hashish). Grapefruit juice is the juice from grapefruits.  It is rich in Vitamin C and ranges from sweet-tart to very sour.  Variations include white grapefruit, pink grapefruit and ruby red grapefruit juice. The grapefruit diet, also known as the Hollywood Diet is a short-term fad diet that has existed in the United States since at least the 1930s.  The diet is based on the claim that grapefruit has a fat-burning enzyme or similar property.  The variations of the grapefruit diet that are too low in calories (below 800-1000 calories a day), too low in carbohydrates, or too low in essential micronutrients are considered unhealthy and potentially dangerous.  While eating half a grapefruit with every meal may be a good way to incorporate more fruit in the diet of a healthy person, grapefruit and grapefruit juice is harmful if the dieter is taking medicines that can interact with grapefruit juice or is allergic to citruses.  This diet will not be beneficial to anyone over a long time as the extremely low calorie intake could lead to malnutrition and many health problems.  The grapefruit diet also does not require exercise. Nothoapiole is a phenylpropene, a natural organic compound present in the essential oil of "Perilla frutescens" from Jeju Island in Korea and the major component of the essential oil obtained from the roots of "Pleurospermum angelicoides" Benth.  It is also found in the essential oil of black caraway ("Carum bulbocastanum") fruits and "Carum nigrum". Sugandha Kokila Oil.  The evergreen, Cinnamomum glaucescens (syn.  Cinnamomum cecidodaphne), part of the Lauraceae family, is native to Nepal and grows wild in the districts of Dang, Rolpa and Sallyan in the Rapti Zone.  This species is a diploid and can grow to an altitude of 1300 meters.  Cinnamomum glaucescens is recognized as an aromatic plant, meaning it has an elevated level of essential oil.  Using steam distillation, the dried berries of Cinnamomum glaucescens produce the essential oil commonly known as sugandha kokila oil, which is yellow in colour and has a camphoraceous, spicy aroma.  This product can be used as a fragrance in soaps, detergents, cosmetics, perfumes and industrial fragrances.  Sugandha kokila oil is also used in indigenous medicine as a demulcent and stimulant.  The Nepal Trade Integration Strategy 2010, identified Medicinal and Aromatic Plants (MAPs) as one of Nepal’s top twenty goods and services with export potential. Wine lactone is a pleasant smelling compound found naturally in apples, orange juice, grapefruit juice, orange essential oil, clementine peel oil and various grape wines.  It was first discovered as an essential oil metabolite in Koala urine by Southwell in 1975.  It was discovered several years later by Guth in white wines and was named "wine lactone".  This monoterpene imparts "coconut, woody and sweet" odors to a wine.  There are 8 possible isomers of wine lactone with the (3"S", 3a "S", 7a"R") isomer being the only one that has been found in wine.  This isomer is also the most potent of all eight with an odor detection threshold of 10 ng/L in model wine.
Answer: Bergamottin