2 6 dimethylheptane 3 5 dione July 8, 2019 16 32 64 128 2 6-dimethyl-3 5-heptanedione 2 6-dimethyl-3-heptanone 2 6 dimethylheptane 2 3-dimethyl heptane 2 2-dimethyl-6-ethylheptane