C集云H3-CH2-CH2-CH2-CH2-CH3 正己烷 CH3-CH-CH2-CH2-CH3 2甲基戊烷 | CH3 CH3-CH2-CH-CH2-CH3 3甲基戊烷 | CH3 CH3-C判领叶H-CH-CH3 2,3二甲基丁证岁依久端烷 | | CH3 CH3 CH毛发存头革践信杨继品说3 | CH3-C-CH2-CH3 对二甲基丁烷 | CH3
