4488
The lipophilic extracts were also found to prevent cell death in a cell - based model system using cardiac H9c2 cells and H ( 2 ) O ( 2 ) , via attenuation of the caspase - 3 and matrix metalloproteinase - 2 activities .
 Chemical: H ( 2 ) O ( 2 )
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: H ( 2 ) O ( 2 ) 
Answer:
 Chemical: H ( 2 ) O ( 2 )