2887
In a human radiolabel study , six healthy men received a single oral dose of 200 mu g of [ ( 14 ) C ] vilanterol ( 74 kBq ) .
 Chemical: [ ( 14 ) C ] vilanterol
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: [ ( 14 ) C ] vilanterol