30387
We simulated the spectrum using second order vibrational perturbation theory ( VPT2 ) with B3LYP / 6 - 31 + G ( d , p ) calculations at the minimum energy geometries of the HMP - A conformer on the X and A states .
 HMP
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 HMP