1) CH3-CCl2-CCH3=CCH3-CCl-CH3
2) CH3-CHCH3-CCH3Cl-CH2-CH3
3) CH3-CH2-CHC2H5-CH2-CC2H5=CCl-CHCl-CH2-CH2-CH3
4) повтор (1)
1) CH3-CCl2-CCH3=CCH3-CCl-CH3
2) CH3-CHCH3-CCH3Cl-CH2-CH3
3) CH3-CH2-CHC2H5-CH2-CC2H5=CCl-CHCl-CH2-CH2-CH3
4) повтор (1)