4 isopropyl 2 5 dimethyl 2 hexene July 8, 2019 16 32 64 128 Is 4 isopropyl 2 5 dimethyl 2 hexene chiral 4 isopropyl 2 4 5 trimethylheptane 2 4-dimethylhexane 2 4-dimethylhex-3-ene 1-isopropyl-4 7-dimethyl-1 2 4a 5 6 8a-hexahydronaphthalene 4 isopropylheptan