2 methyl 3 heptene cis and trans July 8, 2019 16 32 64 128 2 3-dimethylhept-2-ene 2 3 dimethylheptan 2 3-dimethyl heptane 2 3 dimethylheptane structure 2 3-dimethyl-2-pentene cis-trans isomers
