What is the fine-grained topic of the following text: Nor Berthollet 2 In 1801, france, mLB, claude Louis Berthollet 9 December 1748 18 getty 521 Platz 17, which serves as the basis of the modern system of naming chemical compounds 9 He died in Arcueil 0 Titel Punkteschnitt. Only return the topic.
Claude Louis Berthollet and his contributions to chemistry.