24270
Synthesis and Pharmacological Characterization of 2 - ( Acylamino ) thiophene Derivatives as Metabolically Stable , Orally Effective , Positive Allosteric Modulators of the GABAB Receptor .
 Chemical: 2 - ( Acylamino ) thiophene
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: 2 - ( Acylamino ) thiophene