17540
Towards this , a novel approach was envisaged to synthesize a ( 99m ) Tc labeled dimeric RGD derivative using a RGD monomer and [ ( 99m ) TcN ] ( + 2 ) intermediate .
 Chemical: ( 99m ) Tc; Chemical: [ ( 99m ) TcN ] ( + 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: ( 99m ) Tc, [ ( 99m ) TcN ] ( + 2 ) 
Answer:
 Chemical: ( 99m ) Tc; Chemical: [ ( 99m ) TcN ] ( + 2 )