发明人张德明,马晓峰,胡光. "Method for the Synthesis of 9-Benzyl-8-methyl-1,4,9-triazaspiro[5.5]Undecan-5-one" [P]. 中国发明专利, 专利号 CN 113461131 A, 授权公告日 2018-08-07.
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