6899
To address this , we investigated the actions at an M ( 1 ) DREADD of benzyl quinolone carboxylic acid ( BQCA ) , a positive allosteric modulator of ACh binding and function that is known to behave according to a simple two - state mechanism at the WT receptor .
 Chemical: benzyl quinolone carboxylic acid; Chemical: BQCA; Chemical: ACh
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: benzyl quinolone carboxylic acid, BQCA, ACh 
Answer:
 Chemical: benzyl quinolone carboxylic acid; Chemical: BQCA; Chemical: ACh