3929
Concentrations of coniine and nicotine sulfate were 0 . 015 % , 0 . 03 % , 0 . 075 % , 0 . 15 % , 0 . 75 % , 1 . 5 % , 3 % , and 6 % and 1 % , 5 % , and 10 % , respectively .
 coniine, nicotine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 coniine, nicotine