28883
Using [ 1 - 13C ] - , [ 2 - 13C ] - , [ 6 - 13C ] - and [ U - 13C6 ] - glucose as carbon sources , we were able to determine the main central metabolic pathways involved in ectoines biosynthesis from glucose .
 Chemical: [ 1 - 13C ] - , [ 2 - 13C ] - , [ 6 - 13C ] - and [ U - 13C6 ] - glucose; Chemical: carbon; Chemical: ectoines; Chemical: glucose
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 - 13C ] - , [ 2 - 13C ] - , [ 6 - 13C ] - and [ U - 13C6 ] - glucose; Chemical: carbon; Chemical: ectoines; Chemical: glucose