CH (2E,4E)-2,4-己二烯 CH2 CH2 H H H CH2 S-顺-1,3-丁二烯 S-反-1,3-丁二烯 S-(Z-13-丁二烯 S-(E)-1,3-丁二烯S-顺-1,3-丁二烯 S-(Z)-1,3 -丁二烯 S-反-1,3-丁二烯 S-(E)- 1,3-丁二烯 H CH2 CH2 C C H H H CH2 CH2 C C C C C C CH3 H CH3 H H H (2E,4E)-2,4-己二烯