(12分)写出下列有机物的系统命名或结构简式: (1) (2)CH3CH(CH3)C(CH3)2CH2CH3 _________________________________ _______________________________ (3) (4) _________________________________ _______________________________ (5)2,2-二甲基-3-乙基己烷 (6)2-甲基-2-丁烯 _________________________________ _______________________________ |