Fig. 11. Conjugate 20 (HC S378C reacted with ArN₃ PD 2 clicked with DBCO biotin and N₃ aniline 3 which was clicked with BP Fluor 568) was re-bridged with ArN₃ bis PD 2 to form conjugate 35, which was then clicked with BP Fluor 647 to form conjugate 36.^†.