Find the longest chain with the greatest number of substituents CH,CH: CH-CH2-CH,-CH 4 5 3-methylhexane CH3 CH; CH3 CH-CH2 CH一 CH2 CH- CH一CH,CH CH CH CH2CH CH3 CH-CH3 CH3 CH- CH3 CH; CH3 wrong correct seven-carbon chain,but only three substituents seven-carbon chain,four substituents Find the longest chain with the greatest number of substituents