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发明人唐晓军,陈志强,孙丽萍. "Method for the Synthesis of 5-{[(9H-fluoren-9-yl)methoxy]carbonyl}-5-azaspiro[2.4]heptane-1-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109312168 B, 授权公告日 2023-07-01.
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