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Submitted on: 06 May 2015.
Revised on: 20 August 2015.
Accepted on: 21 September 2015.
___________________JOURNAL OF ORGANIC CHEMISTRY---AMER CHEMICAL SOC
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http://reply.papertrans.cn/2/185/18489/18489-34.png
Submitted on: 16 November 2013.
Revised on: 16 January 2014.
Accepted on: 11 March 2014.
___________________JOURNAL OF ORGANIC CHEMISTRY---AMER CHEMICAL SOC
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