4 3 4 7 5 6 July 8, 2019 16 32 64 128 8 3 4 7 5 6 7 4 3 4 x 5 6 2 3 4 7 5 6 1 3 4 7 5 6 9 3 4 7 5 6 4 7 x 4 3 8 x 5 6 4 7 times 4 3 8 times 5 6 4 5 diethyl 3 4 5 7 tetramethyl 6 propyldecan 3 4 4 7 tetramethyl 5 6 diethyloctane 7 8t 4 7 5 6t 3 4