tricosane diacid

例句：

1. 1. The compound was isolatedfrom the plant extract and identified as tricosane diacid.
   该化合物从植物提取物中分离出来，并被鉴定为三萜酸二酐。
2. 2. The research focusedon the synthesis of this triterpenic acid dicarboxylicanhydride.
   研究专注于这种三萜酸二酐的合成。
3. 3. The triterpenic acid dicarboxylic anhydride is a key intermediate in theproduction of pharmaceuticals.
   三萜酸二酐是生产药物的关键中间体。