1) СH2-СH2-СH2-СH2-СH3
| | |СH3 CH3 CH3
CH3
|2) CH3-C-CH3
|
CH3 CH3
| |
3) CH3-C-CH2-C-CH2-CH2-CH2-CH2-CH3
1) СH2-СH2-СH2-СH2-СH3
| | |
СH3 CH3 CH3
CH3
|
2) CH3-C-CH3
|
CH3
CH3 CH3
| |
3) CH3-C-CH2-C-CH2-CH2-CH2-CH2-CH3
| |
CH3 CH3