22986
Benchmark quantum - chemical calculations on a complete set of rotameric families of the DNA sugar - phosphate backbone and their comparison with modern density functional theory .
 Chemical: sugar; Chemical: phosphate
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: sugar; Chemical: phosphate