20652
The methods could be further applied to any polyunsaturated fatty acids containing the cis - 1 , 4 , 7 , 10 - undecatetraene moiety to produce a range of novel compounds with potential biological activity .
 polyunsaturated fatty acids, cis - 1 , 4 , 7 , 10 - undecatetraene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 polyunsaturated fatty acids, cis - 1 , 4 , 7 , 10 - undecatetraene