17597
Synthesis and pharmacological evaluation of some novel 2 - ( 5 - hydroxy - 5 - trifluoromethyl - 4 , 5 - dihydropyrazol - 1 - yl ) - 4 - ( coumarin - 3 - yl ) thiazoles .
 2 - ( 5 - hydroxy - 5 - trifluoromethyl - 4 , 5 - dihydropyrazol - 1 - yl ) - 4 - ( coumarin - 3 - yl ) thiazoles
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 2 - ( 5 - hydroxy - 5 - trifluoromethyl - 4 , 5 - dihydropyrazol - 1 - yl ) - 4 - ( coumarin - 3 - yl ) thiazoles