Помогите пожалуйста Мне надо найти... - вопрос №597514

                  CH3

                   |

1) CH3-CH2 -C=C-CH2-CH3

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                      CH3

             CH3                 CH3

              |                     |

2) CH3 — C — CH=CH — C -CH3

              |                     |

             CH3                 CH3

             CH3   CH3

               |      |

3)  CH3 — C — C — CH2 — CH2 — CH3

               |      |

             CH3  CH3

             CH3            CH3              CH3

               |                |                   |

4) CH3 — CH — CH — CH — CH2 — CH — CH3

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                     C4H9