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Synthesis and biological evaluation of ( 68 ) Ga labeled bis - DOTA - 3 , 3 ' - ( benzylidene ) - bis - ( 1H - indole - 2 - carbohydrazide ) as a PET tracer for in vivo visualization of necrosis .
 Chemical: ( 68 ) Ga labeled bis - DOTA; Chemical: 3 , 3 ' - ( benzylidene ) - bis - ( 1H - indole - 2 - carbohydrazide )
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: ( 68 ) Ga labeled bis - DOTA; Chemical: 3 , 3 ' - ( benzylidene ) - bis - ( 1H - indole - 2 - carbohydrazide )