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A highly selective P450 1B1 inhibitor 5 - hydroxy - 4 ' - propargyloxyflavone ( 5H4 ' FPE ) was discovered .
 Chemical: 5 - hydroxy - 4 ' - propargyloxyflavone; Chemical: 5H4 ' FPE
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: 5 - hydroxy - 4 ' - propargyloxyflavone; Chemical: 5H4 ' FPE