2188
Both apo - 10 ' - lycopenoic acid and apo - 14 ' - lycopenoic acid were able to inhibit spontaneous and H ( 2 ) O ( 2 ) - induced ROS production in a dose - dependent manner .
 apo - 10 ' - lycopenoic acid, apo - 14 ' - lycopenoic acid, H ( 2 ) O ( 2 )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 apo - 10 ' - lycopenoic acid, apo - 14 ' - lycopenoic acid, H ( 2 ) O ( 2 )