M7018——2,6-bis(trimethytin)-4,8-bis(5-(2- butyloctyl)thiophen-2-yl)benzo [1,2-b:4,5-b’]dithiophene

M7178——3,9-bis(trimethylstannane)-5,5,11,11-tetrakis(5-(2-ethylhexyl)-thiophen-2-yl)-dithieno[2,3-d:2′,3′-d′]-s-indaceno[1,2-b:5,6-b′]- dithiophene