某烃经催化加氢后得到2甲基丁烷，该烃不可能是(  )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21462' and id < 1862430 and id<>'1862430' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21462' and id > 1862430 and id<>'1862430' order by id asc limit 5