下列强心苷的鉴别反应中，属于不饱和五 元内酯环反应的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29772' and id < 2417647 and id<>'2417647' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29772' and id > 2417647 and id<>'2417647' order by id asc limit 5