4285
The synthetic stereoisomer , [ + ] - Hup A , is less toxic due to poor AChE inhibition and is suitable for both pre - / post - exposure treatments of nerve agent toxicity .
 Chemical: [ + ] - Hup A
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: [ + ] - Hup A