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Commitments and Contingencies (Details 4)
9 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Commitments and Contingencies Disclosure [Abstract]    
Risk-free interest rate 3.69% 3.10%
Expected life of options (years) 5 years 7 months 17 days 5 years 6 months 3 days
Annualized volatility 85.16% 84.12%
Dividend rate 0.00% 0.00%