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ETHNOPHARMACOLOGICAL RELEVANCE : Sweetgum , Styrax liquidus ( Turkish sweetgum ) is a resinous exudate obtained from the wounded barks of Liquidambar orientalis Miller tree which belongs to Altingiaceae ( Hamamelidaceae ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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