26410
The single laser flash photolysis ( FP ) of 2 - ( 4 - benzoylphenyl ) - 2 - phenyl - 1 - methylenecyclopropane gave rise to a ground state trimethylenemethane ( TMM ) biradical with absorption bands at 362 and 545 nm and an excited state of this biradical that displays triplet - triplet fluorescence at 580 nm .
 Chemical: 2 - ( 4 - benzoylphenyl ) - 2 - phenyl - 1 - methylenecyclopropane; Chemical: trimethylenemethane; Chemical: TMM
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: 2 - ( 4 - benzoylphenyl ) - 2 - phenyl - 1 - methylenecyclopropane; Chemical: trimethylenemethane; Chemical: TMM