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Prepaid Expenses and Other Current Assets (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Prepaid manufacturing expenses $ 35,661,947 $ 0
Other prepaid expenses 4,695,509 1,584,598
Prepaid expenses and other current assets $ 40,357,456 $ 1,584,598