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发明人孙丽萍,马晓峰,杨光. "Method for the Synthesis of (5'h,7'h-Spiro[cyclobutane-1,6'-pyrazolo[5,1-b][1,3]oxazin]-3'-yl)methanamine hydrochloride" [P]. 中国发明专利, 专利号 CN 112308884 A, 授权公告日 2020-12-01.
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