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发明人周伟,冯建国,罗永刚. "A Process for Preparing High-Purity 8-Benzyl-4-(2-phenylbutanoyl)-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113974713 B, 授权公告日 2019-08-25.
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