下列哪种物质今软脂酸的合成反应（    ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27520' and id < 2271174 and id<>'2271174' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27520' and id > 2271174 and id<>'2271174' order by id asc limit 5