technetium Tc 99m TRODAT-1 [ (99mTc)TRODAT-1,2-((2-((((3-(4-chlorophenyl)-8-methyl-8-azabicyclo(3,2,1)oct-2-yl)methyl)(2-mercaptoethyl)amino)ethyl)ethanethiolato(3-))-oxo-(1R))technetium,TRODAT-1 Tc-99m,Tc-99m-TRODAT-1,technetium-99m TRODAT-1 ] used for imaging dopamine transporters in humans; structure given in first source