tert-butyl 5,5'-(2S,2'S)-2,2'-(4,4'-(biphenyl-4,4'-diyl)bis(1H-imidazole-4,2-diyl))bis(pyrrolidine-2,1-diyl)bis(oxomethylene)bis(1-methyl-1H-pyrrole-5,3-diyl)dicarbamate