3 5 5 7 4 8 July 8, 2019 16 32 64 128 3 5 6 7 4 8 3 5 7 8 4 2 3 5 4 7 8 9 5 3 13 x 7 5 13 4 8 5 3 4 vs 5 7 8 3 5 diethyl 2 4 7 8 tetramethyl 5 propyldecane