10509
Tetracyclic BePI derivatives are characterized by a particular curved shape , and the presence of an oxo group on the pyridine ring was found to be required for aurora kinase B inhibition .
 Chemical: Tetracyclic BePI; Chemical: oxo; Chemical: pyridine
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: Tetracyclic BePI; Chemical: oxo; Chemical: pyridine