tert-butyl 2-[5-[4-[2-[4-[2-[(1S)-1-[methyl-[(2-methylpropan-2-yl)oxycarbonyl]amino]ethyl]-1H-imidazol-5-yl]phenyl]ethynyl]phenyl]-1H-imidazol-2-yl]pyrrolidine-1-carboxylate