CH3-CH2-CH-CH2-CH-CH2-CH2-CH3
                      |             |
                
                    C2H5      OH


CH3-CH-CH2-CH-CH3
                |           |
              
             OH         OH

   CH3-CH2-CH-CH2-CH3
                             |

                            OH

  CH3-CH-CH2-CH2-CH2-CH2-CH2-CH2
                  |                                               |

                CH3                                          OH


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