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The mentioned shark liver oil was comprised mainly of diacylglycerol ether and triacylglycerols .
 diacylglycerol ether, triacylglycerols
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 diacylglycerol ether, triacylglycerols