27391
However , 3 - phenylcoumarin 14 showed activity in the same range ( IC50 = 6 nM ) , is reversible , and also severalfold more selective than compound 15 .
 Chemical: 3 - phenylcoumarin
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: 3 - phenylcoumarin