21263
A series of nicotinic acid conjugates with non - steroidal anti - inflammatory drugs ( NSAID ' s ) have been effectively synthesized using TBTU in high yield and purity .
 Chemical: nicotinic acid; Chemical: TBTU
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: nicotinic acid, TBTU 
Answer:
 Chemical: nicotinic acid; Chemical: TBTU