12,13-Dihydro-12,13-bis(2-octyldodecyl)-3,9-diundecyldithieno[2′′,3′′:4′,5′]thieno[2′,3′:4,5]pyrrolo[3,2-e:2′,3′-g][2,1,3]benzothiadiazole-2,10-dicarboxaldehyde, 98%, 1g