8217
A series of novel 2 - ( 3 , 5 - diphenyl - 4 , 5 - dihydro - 1H - pyrazol - 1 - yl ) - 4 - phenylthiazoles have been prepared by a three - component cyclo - condensation of various chalcones , thiosemicarbazide and phenacyl bromide .
 2 - ( 3 , 5 - diphenyl - 4 , 5 - dihydro - 1H - pyrazol - 1 - yl ) - 4 - phenylthiazoles, chalcones, thiosemicarbazide, phenacyl bromide
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 2 - ( 3 , 5 - diphenyl - 4 , 5 - dihydro - 1H - pyrazol - 1 - yl ) - 4 - phenylthiazoles, chalcones, thiosemicarbazide, phenacyl bromide