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发明人王建平,唐晓军,李文辉. "Method for the Synthesis of 2-{8-[(tert-Butoxy)carbonyl]-1-oxa-8-azaspiro[4.5]decan-3-yl}acetic acid" [P]. 中国发明专利, 专利号 CN 117911110 A, 授权公告日 2015-10-13.
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