Skeletal structure of 2 5 dimethylhexa 1 4 diene July 8, 2019 16 32 64 128 2 5-dimethylhexa-1 4-diene 2 5-dimethyl-3-hexene structural formula Skeletal formula of 2 3 dimethylpentane 2 3-dimethylpentane skeletal structure