19157
Noninvasive molecular imaging of H ( 2 ) O ( 2 ) using fluorogenic systems represents an effective way to detect and measure the accumulation of this metabolite .
 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 )