19437
Coumarins hinged directly on benzimidazoles and their ribofuranosides to inhibit hepatitis C virus .
 Chemical: Coumarins; Chemical: benzimidazoles; Chemical: ribofuranosides
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Coumarins; Chemical: benzimidazoles; Chemical: ribofuranosides