13785
Previous work has extensively characterized a common allosteric site on mGlu5 , termed the MPEP ( 2 - Methyl - 6 - ( phenylethynyl ) pyridine ) binding site .
 Chemical: MPEP; Chemical: 2 - Methyl - 6 - ( phenylethynyl ) pyridine
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: MPEP; Chemical: 2 - Methyl - 6 - ( phenylethynyl ) pyridine