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Leases - Future minimum lease payments (Details) - USD ($)
Mar. 31, 2022
Sep. 30, 2021
Future minimum lease payments under operating leases    
2023 $ 14,676  
2024 14,676  
2025 9,784  
Total minimum lease payments 39,136  
Amount representing interest (3,395)  
Present value of minimum lease payments 35,741  
Current portion (13,951) $ (14,296)
Long-term portion of lease obligations $ 21,790