Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (Parentheticals)

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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (Parentheticals) - USD ($)
3 Months Ended 6 Months Ended
Apr. 30, 2020
Apr. 30, 2019
Apr. 30, 2020
Apr. 30, 2019
Research and Development Expense [Member]        
Non-cash share-based compensation expenses $ 458,132 $ 655,066 $ 855,655 $ 2,228,845
Selling, General and Administrative Expenses [Member]        
Non-cash share-based compensation expenses $ 651,954 $ 666,384 $ 1,275,765 $ 1,842,769