Condensed Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net loss	$ (29,372,119)	$ (38,086,266)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	9,860	12,177
Stockbased compensation	5,722,651	3,551,578
Amortization of right of use lease asset	195,825	160,540
Foreign currency (gain)	(247,233)	(283,636)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	2,648,090	1,698,801
Accounts payable	(1,955,231)	2,173,125
Accrued expenses and other liabilities	(4,303,808)	2,441,836
Lease liability	(205,427)	(271,625)
Net cash used in operating activities	(27,507,392)	(28,603,470)
Cash flows from investing activities:
Purchases of property and equipment		(9,419)
Net cash used in investing activities		(9,419)
Cash flows from financing activities:
Proceeds from the exercise of stock options	86,970	150,949
Net cash provided by financing activities	86,970	150,949
Decrease in cash and cash equivalents	(27,420,422)	(28,461,940)
Effect of exchange rate changes on cash	(168,860)	(480,296)
Cash and cash equivalents-beginning of year	89,017,686	130,088,869
Cash and cash equivalents-end of period	61,428,404	$ 101,146,633
Noncash activities:
Operating lease liabilities arising from obtaining right-of-use assets	$ 124,043