3772
However , a high - throughput beta - arrestin - based screen failed to detect activation of GPR18 by NAGly ( Yin et al . , 2009 ; JBC , 18 : 12328 ) .
 Chemical: NAGly
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: NAGly