16145
Intracellular antioxidant assays showed that compounds 1 - 4 displayed significant protective effects on H ( 2 ) O ( 2 ) - induced cardiac cell injury .
 Chemical: H ( 2 ) O ( 2 )
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: H ( 2 ) O ( 2 )