M7081——4,7-bis(5-(trimethylstannyl)thiophen-2-yl)benzo[c][1,2,5]thiadiazole

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