21272
A scaffold bearing eight terminal alkyne groups was synthesized from sucrose , and copies of an azide - terminated Gd - DOTA complex were attached via copper ( I ) - catalyzed azide - alkyne cycloaddition .
 Chemical: alkyne; Chemical: sucrose; Chemical: azide; Chemical: Gd - DOTA; Chemical: copper ( I ); Chemical: azide - alkyne
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: alkyne; Chemical: sucrose; Chemical: azide; Chemical: Gd - DOTA; Chemical: copper ( I ); Chemical: azide - alkyne