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Rooibos is rich in antioxidant polyphenols , with the dihydrochalcone , aspalathin , as a major active ingredient .
 Chemical: polyphenols; Chemical: dihydrochalcone; Chemical: aspalathin
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: polyphenols; Chemical: dihydrochalcone; Chemical: aspalathin