19131
The molecular geometries of the dipeptides are fully optimized at B3LYP / 6 - 311 + + G ( d , p ) level and subsequent frequency calculations confirm them as true minima .
 Chemical: dipeptides
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: dipeptides