17047
The integrated approach reported here to generate compact , neutral and lipophilic Re 2 - arylbenzothiazoles could be applied to other potent pharmacophores as well to convert other current A beta PET tracers to their ( 99m ) Tc analogs for more widespread application via the use of SPECT scanners .
 Chemical: Re 2 - arylbenzothiazoles; Chemical: ( 99m ) Tc
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: Re 2 - arylbenzothiazoles, ( 99m ) Tc 
Answer:
 Chemical: Re 2 - arylbenzothiazoles; Chemical: ( 99m ) Tc