Question: The company that markets Polysilicone-15 as Parsol SLX is headquartered where?

full_context: Document 1: Royal Dutch Shell: Royal Dutch Shell plc (, ), commonly known as Shell, is a British–Dutch multinational oil and gas company headquartered in the Netherlands and incorporated in the United Kingdom. It is one of the six oil and gas "supermajors" and the sixth-largest company in the world measured by 2016 revenues (and the largest based in Europe). Shell was first in the 2013 Fortune Global 500 list of the world's largest companies; in that year its revenues were equivalent to 84% of the Netherlands' $556 billion GDP.
Document 2: Dow Chemical Company: The Dow Chemical Company, commonly referred to as Dow, was an American multinational chemical corporation headquartered in Midland, Michigan, United States, and the predecessor of the merged company DowDuPont. In 2007, it was the second-largest chemical manufacturer in the world by revenue (after BASF) and as of February 2009, the third-largest chemical company in the world by market capitalization (after BASF and DuPont). It ranked second in the world by chemical production in 2014.
Document 3: Boric acid: Boric acid, also called hydrogen borate, boracic acid, orthoboric acid and acidum boricum , is a weak, monobasic Lewis acid of boron, which is often used as an antiseptic, insecticide, flame retardant, neutron absorber, or precursor to other chemical compounds. It has the chemical formula HBO (sometimes written B(OH)), and exists in the form of colorless crystals or a white powder that dissolves in water. When occurring as a mineral, it is called sassolite.
Document 4: Mars Nederland: Mars Nederland (English: Mars Netherlands ) is the Dutch division of Mars, Incorporated, a privately held multi-national company in food, pet care products, and confectionery products. It has its headquarters and main production site in Veghel, North Brabant. A second production site is located in Oud-Beijerland, South Holland. The chocolate factory in Veghel is the largest production site owned by Mars, Incorporated, and is among the largest chocolate factories in the world.
Document 5: Sodium polycarboxylate: Sodium polycarboxylate is the name used on consumer product labels in the United States to designate a family of anionic polymers with a long carbon chain backbone along which are many attached carboxyl functional groups. They are used in consumer household cleaning products to enhance performance, and prevent redeposition of the material removed from the dirty article. In the United States the major end-use is in powdered home laundry detergents. The commonly used molecular weights range from 2,000-10,000. They can be homopolymers, made from one type of monomer, such as 2-propanoic acid, or heteropolymers (copolymers), made from two monomers, such as acrylate and maleic acid. These copolymers can be made in any ratio, thus the designation "sodium polycarboxylate" covers a wide range of distinct molecules.
Document 6: Polybenzimidazole fiber: Polybenzimidazole (PBI, short for poly[2,2’-("m"-phenylen)-5,5’-bisbenzimidazole]) fiber is a synthetic fiber with a very high melting point. It has exceptional thermal and chemical stability and does not readily ignite. It was first discovered by American polymer chemist Carl Shipp Marvel in the pursuit of new materials with superior stability, retention of stiffness, toughness at elevated temperature. Due to its high stability, polybenzimidazole is used to fabricate high-performance protective apparel such as firefighter’s gear, astronaut space suits, high temperature protective gloves, welders’ apparel and aircraft wall fabrics. In recent years, polybenzimidazole found its application as a membrane in fuel cells.
Document 7: Pomade: Pomade ( ; French "pommade") is a greasy, waxy, or a water-based substance that is used to style hair. Pomade gives the user's hair a shiny, slick appearance, and does not dry it out. It lasts longer than most hair care products, often requiring multiple washes to completely remove. The original pomade of the eighteenth and nineteenth centuries consisted mainly of bear fat or lard. Lanolin, beeswax, and petroleum jelly have been used extensively in the manufacture of modern pomades. Stiffening properties of pomades make sculptured hairstyles such as the pompadour or quiff possible; while long lasting moisturizing properties make it popular with individuals with Afro-textured hair.
Document 8: Polysilicone-15: Polysilicone-15 (INCI) is an organic compound used in hair products like shampoos, conditioners, hair sprays, pomades and color treatment products to absorb UVB radiation. In the EU, it is also approved for use in sunscreens and cosmetics. The absorption maximum is at about 310 nm. It is marketed as Parsol SLX by DSM.
Document 9: DSM (company): Koninklijke DSM N.V. (Royal DSM, commonly known as DSM), is a Dutch multinational active in the fields of health, nutrition and materials. Headquartered in Heerlen, at the end of 2016 DSM employed 20,786 people in around 50 countries and posted net sales of €7,920m.
Document 10: Polyferrocenes: Polyferrocenes are polymers containing ferrocene units. Ferrocene offers many advantages over pure hydrocarbons when used as a building block of macromolecular chemistry. It is temperature stable, resistant to acids and alkalis, resistant to air and can be easily manufactured from inexpensive raw materials. The variety of possible substitutions at the ferrocene parent body results in a multitude of accessible polymers with interesting electronic and photonic properties. Many polyferrocenes are relatively easily accessible. Poly(1,1'-ferrocene-silane) can be prepared by ring-opening polymerization and has a variety of interesting properties, such as a high refractive index or semiconductor properties. Ring-opening polymerization usually leads to polymers containing ferrocene in the backbone. Besides the latter motif, ferrocene can be attached to the backbone as pendant unit as well.<ref name="DOI10.1039/c6cs00196c">Rudolf Pietschnig: "Polymers with pendant ferrocenes." In: "Chemical Society Reviews." 45, 2016, S. 5216, .</ref>
Document 11: Novo Nordisk: Novo Nordisk is a Danish multinational pharmaceutical company headquartered in Bagsværd, Denmark, with production facilities in eight countries, and affiliates or offices in 75 countries. Novo Nordisk is controlled by majority shareholder Novo Holdings A/S which holds approximately 25% of its shares and a supermajority (75%) of its voting shares.
Document 12: Trioxsalen: Trioxsalen (trimethylpsoralen, Trioxysalen or Trisoralen) is a furanocoumarin and a psoralen derivative. It is obtained from several plants, mainly "Psoralea corylifolia". Like other psoralens it causes photosensitization of the skin. It is administered either topically or orally in conjunction with UV-A (the least damaging form of ultraviolet light) for phototherapy treatment of vitiligo and hand eczema. After photoactivation it creates interstrand cross-links in DNA, which can cause programmed cell death unless repaired by cellular mechanisms. In research it can be conjugated to dyes for confocal microscopy and used to visualize sites of DNA damage. The compound is also being explored for development of antisense oligonucleotides that can be cross-linked specifically to a mutant mRNA sequence without affecting normal transcripts differing at even a single base pair.
Document 13: Rabobank: Rabobank (] ; full name: "Coöperatieve Rabobank U.A.") is a Dutch multinational banking and financial services company headquartered in Utrecht, Netherlands. It is a global leader in food and agriculture financing and sustainability-oriented banking. The group comprises 129 independent local Dutch Rabobanks (2013), a central organisation (Rabobank Nederland), and a large number of specialised international offices and subsidiaries. Food and agribusiness constitute the primary international focus of the Rabobank Group. Rabobank is the second-largest bank in the Netherlands in terms of total assets.
Document 14: Herbalife: Herbalife International is a global multi-level marketing corporation that develops, markets and sells nutrition supplements, weight management, sports nutrition and personal-care products. The company was founded by Mark Hughes in 1980, and it employs an estimated 7,800 people worldwide. Herbalife reported net sales of US$4.488 billion in 2016, flat with 2015, and net income of $260.0 million, down 23% from the year prior. The business is incorporated in the Cayman Islands, and its corporate headquarters are there.
Document 15: USANA Health Sciences: Usana Health Sciences, Inc., or USANA, is a Utah-based multi-level marketing company that produces various nutritional products and dietary supplements. Usana products, most of which are manufactured at the company’s West Valley City facility, are sold in 20 countries via a network of independent distributors (referred to as "associates"). Usana is the 24th largest multi-level marketing company in the world. The company has sponsored and provided products to several athletic organizations. In 2007, several of Usana's executives were discovered to have made false statements in their resumes.
ground_truth: Heerlen