16280
Virtual screening was performed involving a total of 13 , 341 small compounds , with the backbone structures of chalcone , flavanone and flavone , available from the ZINC database .
 Chemical: chalcone; Chemical: flavanone; Chemical: flavone
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: chalcone; Chemical: flavanone; Chemical: flavone