690
The mGlu8 receptor agonist ( S ) - 3 , 4 - dicarboxyphenylglycine [ ( S ) - 3 , 4 - DCPG , 10 - 100 nM ] was ineffective .
 Chemical: ( S ) - 3 , 4 - dicarboxyphenylglycine; Chemical: ( S ) - 3 , 4 - DCPG
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: ( S ) - 3 , 4 - dicarboxyphenylglycine; Chemical: ( S ) - 3 , 4 - DCPG