20573
The formation from D - glucose of both enantiomers of 2 , 4 - dideoxy - 2 , 4 - iminoribonic acid is the first chemical synthesis of unprotected 3 - hydroxyazetidine carboxylic acids .
 Chemical: D - glucose; Chemical: 2 , 4 - dideoxy - 2 , 4 - iminoribonic acid; Chemical: 3 - hydroxyazetidine carboxylic acids
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: D - glucose; Chemical: 2 , 4 - dideoxy - 2 , 4 - iminoribonic acid; Chemical: 3 - hydroxyazetidine carboxylic acids