5588
EFV is extensively metabolized by cytochrome P450 to a number of oxygenated products ; however , the pharmacologic activity and distribution of these metabolites in anatomic compartments have yet to be explored .
 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