13454
Under a 1 . 5 x 10 ( 5 ) cells / ml of initial algal density ( IAD ) , the effective concentration causing 50 % inhibition at 4 - d ( 4 d - EC50 ) value of nonivamide was 5 . 1 mg / L .
 nonivamide
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 nonivamide