4 ethyl 3 5 dimethyl octane July 8, 2019 16 32 64 128 4 ethyl 5 isopropyl 3 3 dimethyl octane 3 ethyl 3 4 dimethyl 5 cyclopropyl octane skeletal formula 3 methylhexane 3 4-dimethyloctane 4 methyl octan
