15645
Ezogabine , known as retigabine in Europe , is an ethyl N - ( 2 - amino - 4 - [ { fluorophenyl } methlamino ] phenylcarbamate ) .
 Ezogabine, retigabine, ethyl N - ( 2 - amino - 4 - [ { fluorophenyl } methlamino ] phenylcarbamate )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Ezogabine, retigabine, ethyl N - ( 2 - amino - 4 - [ { fluorophenyl } methlamino ] phenylcarbamate )