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Commitments (Details 5) - USD ($)
12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2015
Total share based compensation $ 4,135,570 $ 5,062,267 $ 1,633,979
General and administrative [Member]      
Total share based compensation 2,017,199 3,208,220 1,633,979
Research and development [Member]      
Total share based compensation $ 2,118,371 $ 1,854,047