(4,4,9,9-tetracycline) 4,9-dihydro-s-indaceno[1,2-b:5,6-b&#039;] diophene-2,7-diyl) bis(trimethylstannane)
(4,4,9,9-tetrakis(4-octylphenyl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b&#039;]dithiophene-2,7-diyl)bis(trimethylstannane)