3 3 diethyl 4 propylheptane July 8, 2019 16 32 64 128 3 4 diethyl 3 methyl 4 propylheptane 3 3 diethylpropan 3 3 – diethyl – 2 – methylheptane 3 3 diethylpentan 3 4-diethylhexane-3 4-diol