2,5-dibutyloctyl-3,6-bis(5-bromothiophen-2-yl)pyrrolo[3,4-c]-pyrrole-1,4-dione;3,6-bis(5-bromo-2-thienyl)-2,5-bis(2-butyloctyl)pyrrolo[3,4-c]pyrrole-1,4- dione;3,6-Bis(5-broMothiophen-2-yl)-2,5-bis(2-butyloctyl)pyrrolo[3,4-c]pyrrole-1,4(2H ,5H )-dione;
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