327705
Perfluorinated carboxylic acids ( PFCAs ) , or perfluorocarboxylates are fully fluorinated organofluorine compound s — or perfluorinated compounds — with carboxylic acid or carboxylate functional group s. PFCAs are fluorocarbon derivatives .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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