22129
A focus was placed on the influence of the C8 - modification of 2 ' - deoxyguanosine ( dG ) on the preferred relative arrangement of the nucleobase and the C8 - substituent and , more importantly , the anti / syn conformational preference with respect to the glycosidic bond .
 Chemical: 2 ' - deoxyguanosine; Chemical: nucleobase
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: 2 ' - deoxyguanosine; Chemical: nucleobase