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Consolidated Balance Sheets - USD ($)
Jun. 30, 2016
Jun. 30, 2015
Current assets:    
Cash and cash equivalents $ 8,500,207 $ 22,469,960
Prepaid expenses and other current assets 798,094 1,497,911
Total current assets 9,298,301 23,967,871
Fixed assets, net of accumulated depreciation 531,348 23,911
Other assets 414,355 400,825
Total assets 10,244,004 24,392,607
Current liabilities:    
Accounts payable 1,259,711 835,285
Accrued expenses 634,853 482,267
Notes payable 273,670 263,752
Derivative liabilities 892,503 14,001,369
Total current liabilities 3,060,737 15,582,673
Other long-term liabilities 140,914
Total liabilities 3,201,651 15,582,673
Commitments and contingencies
Stockholders' equity:    
Preferred stock, value
Common stock, $0.001 par value, 100,000,000 shares authorized, 12,035,037 and 10,778,474 shares issued and outstanding, respectively 12,035 10,778
Additional paid-in capital 86,127,252 84,921,327
Accumulated deficit (79,096,934) (76,122,243)
Total stockholders' equity 7,042,353 8,809,934
Total liabilities and stockholders' equity 10,244,004 24,392,607
Class A Convertible Preferred Stock    
Stockholders' equity:    
Preferred stock, value $ 72