来自梁永生的问题
ch3ch2ch(ch3)c(CH3)(ch2)(ch2)(ch3)ch2ch3ch3ch2ch(ch3)c(CH3)(ch2)(ch2)(ch3)ch2ch3是什么东西?
ch3ch2ch(ch3)c(CH3)(ch2)(ch2)(ch3)ch2ch3
ch3ch2ch(ch3)c(CH3)(ch2)(ch2)(ch3)ch2ch3是什么东西?


ch3ch2ch(ch3)c(CH3)(ch2)(ch2)(ch3)ch2ch3ch3ch2ch(ch3)c(CH3)(ch2)(ch2)(ch3)ch2ch3是什么东西?
ch3ch2ch(ch3)c(CH3)(ch2)(ch2)(ch3)ch2ch3
ch3ch2ch(ch3)c(CH3)(ch2)(ch2)(ch3)ch2ch3是什么东西?
3,4-二甲基-3-乙基己烷