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发明人赵玉洁,黄志刚,孙丽萍. "Method for the Synthesis of 6,6-dimethoxy-2-(2-nitrophenyl)sulfonyl-2-azaspiro[3.3]heptane" [P]. 中国发明专利, 专利号 CN 109135736 B, 授权公告日 2019-08-17.
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