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The conformer distribution and the proton NMR shifts of these 1 , 2 - diols in benzene have been computed on the basis of density functional theory .
 Chemical: 1 , 2 - diols; Chemical: benzene
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: 1 , 2 - diols; Chemical: benzene