4 8 12 16 tetramethylheptadecan 4 olide July 8, 2019 16 32 64 128 Heptadecane 2 6 10 15-tetramethyl- Heptadecane 2 6 10 14-tetramethyl- 2 4 8 10-tetraoxaspiro 5.5 undecane