C6H14
CH3-CH2-CH2-CH2-CH2-CH3
H H H H H H
I I I I I I
H-C-C-C-C-C-C-H
I I I I I I
H H H H H H
C7H16
CH3-CH2-CH2-CH2-CH2-CH2-CH3
H H H H H H H
I I I I I I I
H-C-C-C-C-C-C-C-H
I I I I I I I
H H H H H H H
C8H18
CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH3
H H H H H H H H
I I I I I I I I
H-C-C-C-C-C-C-C-C-H
I I I I I I I I
H H H H H H H H