Condensed Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 45,978,737	$ 88,067,647
Prepaid expenses and other current assets	580,279	986,680
Total current assets	46,559,016	89,054,327
Property and equipment, net	510,463	3,423,880
Other assets	142,870	142,870
Total assets	47,212,349	92,621,077
Current liabilities:
Accounts payable	1,723,204	4,369,133
Accrued expenses	6,024,527	5,422,205
Restructuring reserve	6,121,781	0
Short term debt	0	3,075,421
Total current liabilities	13,869,512	12,866,759
Noncurrent liability:
Long term debt	0	17,382,907
STOCKHOLDERS' EQUITY
Preferred stock, 5,000,000 shares authorized at June 30, 2018 and December 31, 2017, 0 outstanding	0	0
Common stock, $0.00033 par value, 75,000,000 shares authorized at June 30, 2018 and December 31, 2017, 31,328,128 shares and 30,869,205 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively	10,551	10,400
Additional paid-in capital	218,798,380	214,309,370
Accumulated deficit	(185,466,094)	(151,948,359)
Total stockholders' equity	33,342,837	62,371,411
Total liabilities and stockholders' equity	$ 47,212,349	$ 92,621,077