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Furthermore , we report for the first time , the presence of 7 , 8 - dimethoxycoumarin and sinapic acid in the methanol extract of Zanthoxylum leprieurii .
 7 , 8 - dimethoxycoumarin, sinapic acid, methanol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 7 , 8 - dimethoxycoumarin, sinapic acid, methanol