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At the same time quality of many extracts and herbal products derived from the plant is still being determined based on the content of ' bacosides A and B ' .
 Chemical: bacosides A and B
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: bacosides A and B