9 1 6 8 3 5 July 8, 2019 16 32 64 128 9 1 8 3 5 6 in fraction 1 9 diphenyl 1 3 6 8 nonatetraen 5 one 1 9-diphenyl nona-1 3 6 8-tetraen-5-one 8 9 1 3 x 5 6 8 9 1 3 times 5 6
