106000-48-0 1H,13H-(1,4,7,10,13,16)Hexaoxacyclooctadecino(2,3-f:11,12-f')bisbenzimidazole, 6,7,9,10,18,19,21,22-octahydro-2,14-dimethyl- 2,14-Dimethyldibenzimidazo(5,6-b;5,6-k)-18-crown-6