2195
The action of CDPPB was blocked by the mGluR5 antagonist , 2 - methyl - 6 - ( phenylethynyl ) - pyridine ( 2 . 5 - 10 mg / kg ) , and was also expressed upon microinjection into frontal cortex ( 0 . 63 - 10 mu g / side ) , but not striatum .
 Chemical: CDPPB; 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: CDPPB; Chemical: 2 - methyl - 6 - ( phenylethynyl ) - pyridine