2 2 5 7 0 July 8, 2019 16 32 64 128 2 1 * 5 2 * 7 0 4 2 2 7 5 0 2 2x 5 7 2 x )= 0 04 2 5 7 2 2 2 5 7 tetramethylbicyclo 4.2 0 octane
