Question: What Nazi war criminal was chairman of the supervisory board of the largest chemical producer in the world?

Context paragraphs:
Christoph Kohl (chemist): Christoph Kohl (born 11 January 1900 in Frankfurt) was a German chemist and industrial leader.  He was chairman of the board of directors and CEO of the chemical and pharmaceutical company Cassella from 1964, chairman of its supervisory board and chairman of the supervisory board of Riedel-de Haën.

Deutsche Telekom eavesdropping controversy: The Deutsche Telekom eavesdropping controversy became public at the end of May 2008 through an article in the German weekly "Der Spiegel".  The prosecutor in Bonn has initiated investigations against eight former members of Deutsche Telekom's advisory board, executive board and former employees.  The investigation focuses on alleged eavesdropping against journalists and members of the supervisory executive boards of Deutsche Telekom, allegedly initiated by then chairman of the supervisory board Klaus Zumwinkel and then CEO .  The objective of the eavesdropping was to find out who had leaked confidential information about planned lay-offs and acquisitions to the media in 2005 and 2006.  According to German law half the members of the advisory board of large publicly listed companies have to be representatives of the employees.  These were apparently suspected of having leaked the information.

Rijnlands Lyceum Foundation: The Rijnlands Lyceum Foundation is an educational organisation in the Netherlands encompassing seven different schools offering both primary and secondary education.  The foundation is based in Wassenaar.  The executive director of the organisation is Dr. Maarten Knoester (since 2008), the chairman of the supervisory board is Frans Weisglas (since 2010), former chairman of the Lower House of the Dutch Parliament.  As chairman of the supervisory board Mr Weisglas succeeded Hans Dijkstal, former vice-prime minister of the Netherlands.

Kurt Bock: Kurt Bock (born 3 July 1958) is a German businessman, the president and chief executive officer (CEO) of BASF, the world's largest chemical producer.

Otto Ambros: Otto Ambros (19 May 1901 – 23 July 1990) was a German chemist and Nazi war criminal, notably involved with the research of chemical nerve agents, especially sarin and tabun.  He worked at Monowitz and used slave labour from Auschwitz.  After the end of the war, he was tried at Nuremburg and convicted of crimes against humanity.

Carl Krauch: Carl Krauch (7 April 1887 – 3 February 1968) was a German chemist, industrialist and Nazi war criminal.  He was an executive at BASF (later IG Farben); during World War II, he was chairman of the supervisory board.  He was a key implementer of the Reich’s Four-Year Plan to achieve national economic self-sufficiency and promote industrial production.  He was Plenipotentiary of Special Issues in Chemical Production, a senator of the Kaiser Wilhelm Society, and an honorary professor at the University of Berlin.  He was convicted in the IG Farben trial after World War II and sentenced to six years in prison.

Rein Willems: Rein Willems (born 26 August 1945, Geleen) was President of Shell Nederland from 2003-2007.  Since 1969, he has held a number of positions at Shell, with postings in Singapore, Australia, the UK, the Philippines and Brazil.  In addition, he was a member of the Executive Committee and the Environmental Committee of the Employers Association VNO-NCW and the Innovation Platform.  He is Chairman of the Supervisory Board of Koninklijke Joh.  Enschedé, member of the Supervisory Board of the Vrije Universiteit Amsterdam, the Centraal Orgaan Opvang Asielzoekers (COA) and the Van Leeuwen Pipe and Tube Group B.V.  He was Chairman of the national Task Force Energy Transition, which was established to make the Dutch economy more sustainable.  He is a member of the supervisory board of FMO, the Dutch development bank.

BASF: BASF SE is a German chemical company and the largest chemical producer in the world.  The BASF Group comprises subsidiaries and joint ventures in more than 80 countries and operates six integrated production sites and 390 other production sites in Europe, Asia, Australia, the Americas and Africa.  Its headquarters is located in Ludwigshafen, Germany.  BASF has customers in over 190 countries and supplies products to a wide variety of industries.  Despite its size and global presence, BASF has received relatively little public attention since it abandoned manufacturing and selling BASF-branded consumer electronics products in the 1990s.

László Csatáry: László Csatáry (] ; 5 March 1915 – 10 August 2013) was a Hungarian citizen and an alleged Nazi war criminal, convicted and sentenced to death "in absentia" in 1948 by a Czechoslovak court.  In 2012, his name was added to the Simon Wiesenthal Center's list of most wanted Nazi war criminals.

Theodor Szehinskyj: Theodor Szehinskyj (born February 14, 1924) is an alleged World War II war criminal.  He was born in Mallnow, Poland.  He was a member of an SS Totenkopf Battalion and is accused of having been a guard in three concentration camps in Germany, Poland and Ukraine.  Szehinskyj emigrated to the United States after the war, but was named as a war criminal by the United States Department of Justice in 2000, subsequently had his citizenship revoked, and is facing attempts to deport him from the country.  He is on the Simon Wiesenthal Center's list of most wanted Nazi war criminals.

Supporting paragraphs: Carl Krauch BASF
Answer: Carl Krauch