M7146——4-hexyl-2,6-bis(trimethylstannyl)-4H-dithieno[3,2-b:2′,3′-d]pyrrole

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