125I]iodo- L-tyrosinamide, N~2~-acetyl-N~6~-[5-[(3aS,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-1-oxopentyl]-L-lysyl-N-[6-[[(1S)-1-[[(2,6-dimethylbenzoyl)oxy]acetyl]-3-methylbutyl]amino]-6-oxohexyl]-3-[