24385
The quality of the structural model is illustrated by comparing the B3LYP / 6 - 311 + G ( d , p ) and B3LYP - D / 6 - 311 + G ( d , p ) anharmonic vibrational signatures with those obtained from IR experiments .
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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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