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Condensed Balance Sheets (Unaudited) - USD ($)
Mar. 31, 2016
Dec. 31, 2015
Current Assets:    
Cash and cash equivalents $ 6,099,698 $ 8,691,155
Prepaid expenses 764,721 833,276
Other current assets 7,997  
Total current assets 6,872,416 9,524,431
Other assets   7,997
Total assets 6,872,416 9,532,428
Current Liabilities:    
Accounts payable and accrued expenses 1,243,262 927,606
Accrued compensation 482,505 760,782
Current portion of long-term debt 708,552 146,052
Total current liabilities 2,434,319 1,834,440
Long-term debt, net of current portion 3,680,921 4,233,059
Total liabilities 6,115,240 6,067,499
Stockholders' Equity:    
Common stock, $0.0001 par value; authorized shares — 50,000,000; issued and outstanding shares - 7,235,841 and 7,201,774 at March 31, 2016 and December 31, 2015, respectively 724 720
Additional paid-in capital 52,042,473 51,524,821
Accumulated deficit (51,286,021) (48,060,612)
Total stockholders' equity 757,176 3,464,929
Total liabilities and stockholders' equity $ 6,872,416 $ 9,532,428