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Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Income Statement [Abstract]        
Revenue from Contract with Customer, Product and Service [Extensible Enumeration] License fee revenue License fee revenue License fee revenue License fee revenue
Revenue        
Total revenue $ 0 $ 10,000,000 $ 0 $ 10,000,000
Total revenue 0 10,000,000 0 10,000,000
Operating expenses        
General and administrative 2,920,672 2,792,894 6,258,098 5,362,881
Research and development 6,043,684 6,797,784 11,063,907 12,603,247
License fee expense 25,000 25,000 50,000 50,000
Total operating expenses 8,989,356 9,615,678 17,372,005 18,016,128
Income (loss) from operations (8,989,356) 384,322 (17,372,005) (8,016,128)
Other income 227,124 29,676 567,272 31,456
Net income (loss) (8,762,232) 413,998 (16,804,733) (7,984,672)
Foreign currency translation adjustments (31,151) (135,869) (53,156) (145,019)
Comprehensive income (loss) $ (8,793,383) $ 278,129 $ (16,857,889) $ (8,129,691)
Income (loss) per common share - basic (in usd per share) $ (0.10) $ 0 $ (0.19) $ (0.10)
Income (loss) per common share - diluted (in usd per share) $ (0.10) $ 0 $ (0.19) $ (0.10)
Weighted average number of shares outstanding:        
Basic (in shares) 86,403,117 84,682,765 86,976,129 84,682,765
Diluted (in shares) 86,403,117 85,369,424 86,976,129 84,682,765