Condensed Consolidated Balance Sheets - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 61,428,404	$ 89,017,686
Prepaid expenses and other current assets	750,929	3,399,019
Total current assets	62,179,333	92,416,705
Property and equipment, net	27,318	38,515
Right of use lease asset	248,834	320,616
Other noncurrent assets	29,375	29,383
Total assets	62,484,860	92,805,219
Current liabilities:
Accounts payable	2,548,388	4,503,619
Accrued expenses	6,267,429	10,571,237
Lease liability-current	223,999	256,309
Total current liabilities	9,039,816	15,331,165
Lease liability-noncurrent	29,773	78,847
Total liabilities	9,069,589	15,410,012
Commitments and contingencies (Note 7)
Stockholders' equity:
Common stock, $0.001 par value, 400,000,000 shares authorized, 21,360,140 and 21,186,827 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively	21,360	21,187
Additional paid-in capital	237,227,804	231,418,356
Accumulated other comprehensive loss	(10,454,699)	(10,037,261)
Accumulated deficit	(173,379,194)	(144,007,075)
Total stockholders' equity	53,415,271	77,395,207
Total liabilities and stockholders' equity	$ 62,484,860	$ 92,805,219