The question receiving 0 marks looks to me to be 3,3,7-trimethylnonane however it's marked wrong?
https://m.imgur.com/a/9Mpwv
收錄日期: 2021-04-18 18:03:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20180123071624AAux9gB