5592
Interestingly , protein - free concentrations of metabolites were only detectable in seminal plasma , where a novel dihdyroxylated metabolite of EFV was also detected .
 Chemical: EFV
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: EFV