Showing structure for (2'r,3'r,4s)-2,2''-diimino-2'-(1h-indol-3-yl)-1,1'',3-trimethyl-4',9'-dihydro-2'h-dispiro[imidazolidine-4,1'-carbazole-3',4''-imidazolidine]-5,5''-dione