25542
The newly designed molecule comprises two C60 s connected to a fluorene backbone via cyclopropyl groups .
 Chemical: C60; Chemical: fluorene; Chemical: cyclopropyl
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: C60; Chemical: fluorene; Chemical: cyclopropyl