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CH3 CH3 CH3 CH CH CH2CH2CH2CH-CH-CHCH3 9 8 65 之CH一CHCHs 1 23 4CH2 CH3 5-(1,2-Dimethylpropyl) CH2一CH-CHg 3 2 1 5-(1,2-Dimethylpropyl)-2-methylnonane C2004 Thomson-Brooks/Cole
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