2 5 3 4 2 6 July 8, 2019 16 32 64 128 5 3 4 2 6 7 2 5 3 4 6 8 2 5 3 4 1 6 2 3p 3 4 1 2 5 6p 2 4 6 trimethyl 1 3 5 2 4 6 trioxatriborinane 6 5 4 3 2 2 b 1
