4483
Carotenoid compositions of coloured tomato cultivars and contribution to antioxidant activities and protection against H ( 2 ) O ( 2 ) - induced cell death in H9c2 .
 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:
 H ( 2 ) O ( 2 )