6,6'-(5,5'-(9,9-dioctyl-9H-fluorene-2,7-diyl)bis(thiophene-5,2-diyl))bis(2,5-bis(2-ethylhexyl)-3-(thiophen-2-yl)pyrrolo(3,4-c)pyrrole-1,4(2H,5H)-dione)
6,6'-(5,5'-(9,9-dioctyl-9h-fluorene-2,7-diyl)bis(thiophene-5,2-diyl))bis(2,5-bis(2-ethylhexyl)-3-(thiophen-2-yl)pyrrolo(3,4-c)pyrrole-1,4(2h,5h)-dione)