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发明人张德明,冯建国,沈红梅. "A Process for Preparing High-Purity 5-(6-Hydroxy-5-methoxy-4-(3-methylbut-2-en-1-yl)benzofuran-2-yl)benzene-1,3-diol" [P]. 中国发明专利, 专利号 CN 112970806 B, 授权公告日 2017-06-12.
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