16807
Concentrations of 11 , 17 - DOA showed the same pattern , but the values were 2 to 4 times higher .
 Chemical: 11 , 17 - DOA
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: 11 , 17 - DOA