17324
Proton nuclear magnetic resonance ( ( 1 ) H NMR ) spectroscopy , gas chromatography - mass spectrometry ( GC / MS ) fingerprinting and chemometrics were employed successfully for the quality control of oils and fats .
 ( 1 ) H
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ( 1 ) H