STRUCTURAL REPRESENTATION CONDENSED CH CH Ch3 CHCH CHCH CH2 CH3 (CH3)2 CH(CH2)2 CH(CH,2 CH3)2 Me2 ch(ch2)2 chet LIYING 2021/2/10LIYING 2021/2/10 STRUCTURAL REPRESENTATION CONDENSED M e2CH(CH2 )2CHEt2 (CH3 )2CH(CH2 )2CH(CH2CH3 )2 CH CH2 CH3 CH2 CH3 CH3 CHCH2 CH2 CH3