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Dorothy Crowfoot Hodgkin (1910–1994) was a British chemist who won the Nobel Prize in Chemistry in 1964 for her work on determining the structure of penicillin and vitamin B12. She was married to Thomas Hodgkin in 1937 and originally used the name Dorothy Crowfoot. However, she changed her name to Dorothy Crowfoot Hodgkin after her marriage in order to avoid confusion with her sister, who was also a chemist.