11596
Here we have surveyed the molecular features of areca nut procyanidins ( ANPs ) using quadrupole time - of - flight liquid chromatography / mass spectrometry ( Q - TOF LC / MS ) and the resulting mass spectrum accurately described ANP from monomer to hexadecamer .
 Chemical: procyanidins
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: procyanidins