Condensed Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net loss	$ (4,948,707)	$ (7,968,705)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	667,338	671,927
Depreciation	17,709	9,548
Changes in operating assets and liabilities
Prepaid expenses and other current assets	182,837	296,283
Accounts payable	(216,290)	(972,662)
Accrued expenses	(773,267)	(1,787,310)
Net cash used in operating activities	(5,070,380)	(9,750,919)
Cash flows from investing activities:
Purchase of property and equipment		(88,938)
Net cash used in investing activities		(88,938)
Net decrease in cash and cash equivalents	(5,070,380)	(9,839,857)
Cash and cash equivalents, beginning of period	12,077,640	41,671,284
Cash and cash equivalents, end of period	$ 7,007,260	$ 31,831,427