poly((N,N'-bis(2-decyl-tetradecyl)-3,4,9,10-perylene diimide-1,7-diyl)-alt-(dithieno(3,2-b:2',3'-d)thiophene-2,6-diyl))
poly((n,n'-bis(2-decyl-tetradecyl)-3,4,9,10-perylene diimide-1,7-diyl)-alt-(dithieno(3,2-b:2',3'-d)thiophene-2,6-diyl))