2888
Plasma , urine , and feces were collected up to 168 hours after the dose and were analyzed for vilanterol , metabolites , and radioactivity .
 Chemical: 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: vilanterol