1H-thieno[3,4-d]imidazole-4-pentanamide, N-[6-[7-chloro-2,3-dihydro-5-(4-hydroxyphenyl)-3-(2-naphthalenylmethyl)-2-oxo-1H-1,4-benzodiazepin-1-yl]hexyl]hexahydro-2-oxo-, (3aS,4S,6aR)- Bz-423-biotin conjugate