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A predominate compound , codonopyrrolidum A , can be used to distinguish the herbs , C . tangshen from C . pilosula var . modesta and C . pilosula .
 Chemical: codonopyrrolidum A
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: codonopyrrolidum A