用化学分析法测得某有机物的化学元素及含量如下表所示，该物质最可能是

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21862' and id < 1910777 and id<>'1910777' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21862' and id > 1910777 and id<>'1910777' order by id asc limit 5