C6H14CH3CH2CH2CH2CH2CH3CH3CH(CH3)CH2CH2CH3CH3CH2CH(CH3)CH2CH3CH3C(CH3)2CH2CH3CH3CH(CH3)CH(CH3)CH3 五种C4H9Br 四种CH3CH2CH2CH2Br,CH3CH2CHBrCH3,CH3CH(CH3)CH2Br,CH3CBr(CH3)CH3