Rumus struktur dari8-etil-2,4,5-trimetil undekana

         CH3         CH3  
           I                I
CH3 -CH -CH2 -CH -CH -CH2 -CH2 -CH -CH2 -CH2 -CH3
                                    I                         I
                                 CH3                   CH2
                                                              I
                                                           CH3

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