20575
The structure of N , 3 - O - dibenzyl - 2 , 4 - dideoxy - 2 , 4 - imino - D - ribonic acid was established by X - ray crystallographic analysis .
 Chemical: N , 3 - O - dibenzyl - 2 , 4 - dideoxy - 2 , 4 - imino - D - ribonic acid
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: N , 3 - O - dibenzyl - 2 , 4 - dideoxy - 2 , 4 - imino - D - ribonic acid