¿Cuál es la estructura de los siguientes alcanos ramificados?

2 - metilpropano

CH3 - CH - CH3 Ι CH3

2, 2, 3 - trimetilbutano CH3 Ι

CH3 - C - CH - CH3 Ι Ι CH3 CH3

3 - etil - 2, 3 - dimetilhexano CH3 CH2 - CH3 Ι Ι

CH3 - CH - C - CH - CH - CH3 Ι CH3

5 - ter - butil - 5 - etil - 3 - isopropil - 2, 6 - dimetiloctano CH3 CH2 - CH3 Ι Ι

CH3 - CH - CH - CH - C - CH - CH - CH3 Ι Ι Ι CH3 - CH CH3CCH3 CH3 Ι Ι CH3 CH3

4 - sec - butil - 2, 2, 4, 5, 6 - pentametilheptano CH3 CH3 CH3 CH3 Ι Ι Ι Ι

CH3 - C - CH2 - C - CH - CH - CH3 Ι Ι CH3 CH3 - CH - CH2 - CH3

6 - ter - butil - 3, 5, 5 - trietil - 2, 4 - dimetilnonano CH3 Ι CH3 CH2CH3 CH2CH3 CH3 - C - CH3 Ι Ι Ι Ι

CH3 - CH - CH - CH - C - CH - CH - CH - CH3 Ι Ι CH3 CH2CH3

7 - butil - 6 - isobutil - 5 - isopropil - 3, 8 - dimetil - 7 - neopentil - 6 - propilundecano CH3 Ι CH3 CH2 Ι Ι CH3 CH2 CH2 Ι Ι Ι CH3 CH - CH3 CH2 CH2 Ι Ι Ι Ι

CH3 - CH2 - CH - CH2 - CH - C - C - CH - CH2 - CH2 - CH3 Ι Ι Ι CH2 CH2 CH3 Ι Ι CH2 - CH3 CH3 C CH3 Ι Ι CH3 CH3.