2 3 8 4 7 July 8, 2019 16 32 64 128 3 2 8 4 7 5 2 3 8 x 4 7 1 2 3 4 8 7 2 3 4 7 8 pentachlorodibenzofuran 2 3 4 7 8 pecdf 2 3 4 7 8 9 3 2 6 8 7 4 3 2 x 5 8 7 4 1 2 3 4 7 8 sequence 2 3 x 4 7 1 8 1 2 3 4 7 8 hxcdf 1 2 3 4 7 8-hexachloro dibenzo-p-dioxin 2 3 4 divided 7 8 2 3 8 x 4 7 as a fraction 2 3 4 8 tetramethyl 7 ethyl decene
