14783
Hence , we conclude that electron - rich carbonyl portals of CB7 have an important role in protonation of the drug in the 2 : 1 inclusion complex .
 Chemical: carbonyl; Chemical: CB7
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: carbonyl; Chemical: CB7