12,12'-Spirobi[12H-thieno[2'',3'':1',2']indeno[5',6':5,6]-s-indaceno[1,2-b]thiophene]-2,2',9,9'-tetracarboxaldehyde, 4,4,4',4',7,7,7',7'-octakis(4-hexylphenyl)-4,4',7,7'-tetrahydro-
12,12'-Spirobi[12H-thieno[2'',3'':1',2']indeno[5',6':5,6]-s-indaceno[1,2-b]thiophene]-2,2',9,9'-tetracarboxaldehyde, 4,4,4',4',7,7,7',7'-octakis(4-hexylphenyl)-4,4',7,7'-tetrahydro-