CH3-CH(CH3)-CH2-CH2-CH2-CH3
CH3-CH2-CH=C(CH3)-CH=CH-CH2-CH3
CH3-C(CH3)=CH-CH2-CH2-CH2-CH3
CH3-NO2-C6H4-CH(CH3)-CH2-CH3
CH3-CH(CH3)-CH2-CH2-CH2-CH3
CH3-CH2-CH=C(CH3)-CH=CH-CH2-CH3
CH3-C(CH3)=CH-CH2-CH2-CH2-CH3
CH3-NO2-C6H4-CH(CH3)-CH2-CH3