Dithieno[2'',3'':4',5']thieno[2',3':4,5]pyrrolo[3,2-e:2',3'-g][2,1,3]benzothiadiazole-2,10-dicarboxaldehyde, 3,9-bis(2-butyloctyl)-12,13-bis(2-ethylhexyl)-12,13-dihydro- [ 2758115-09-0 ]