(-4/9 ÷ 3/4) ÷ 6/11 and -3/7 ÷ (6/11 ÷22/23)
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1-Bromo-2,4-[1,6,11-tris(pentafluorophenyl)-8,12-dibromo-2,5-epimino-7,10-metheno-9-aza-2,4,6,8-undecatetraene-1,11-diylidene]-7-(pentafluorophenyl)-2,4-dihydro-3,3b-diaza-3bH-cyclopenta[a]pentalene
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