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Anthocyanins and their aglycone anthocyanidins represent the most abundant flavonoids in human diet and popular constituents of various dietary supplements .
 Anthocyanins, anthocyanidins, flavonoids
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Anthocyanins, anthocyanidins, flavonoids