27389
5 - Nitro - 2 - ( 4 - methoxyphenyl ) benzofuran ( 8 ) is the most active compound of the benzofuran series , presenting MAO - B selectivity and reversible inhibition ( IC50 = 140 nM ) .
 Chemical: 5 - Nitro - 2 - ( 4 - methoxyphenyl ) benzofuran; Chemical: benzofuran
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: 5 - Nitro - 2 - ( 4 - methoxyphenyl ) benzofuran; Chemical: benzofuran