
Poly[[5,7-bis(2-ethylhexyl)-4,8-dioxo-4H,8H-benzo[1,2-c:4,5-c‘]dithiophene-1,3-diyl][3,3”’-bis(2-ethylhexyl)-3”,4′-difluoro[2,2′:5′,2”:5”,2”’-quaterthiophene]-5,5”’-diyl]]
Please see below exampled COA for more details:

Poly[[5,7-bis(2-ethylhexyl)-4,8-dioxo-4H,8H-benzo[1,2-c:4,5-c‘]dithiophene-1,3-diyl][3,3”’-bis(2-ethylhexyl)-3”,4′-difluoro[2,2′:5′,2”:5”,2”’-quaterthiophene]-5,5”’-diyl]]
Please see below exampled COA for more details: