发明人徐明华,钱学锋,林芳. "Method for the Synthesis of 4-(4-Chloro-3-nitrobenzoyl)-8-ethyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114491829 A, 授权公告日 2021-10-21.
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