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v3.7.0.1

Consolidated Statements of Cash Flows (Unaudited) - USD ($) | 6 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016
Cash Flows From Operating Activities: |  |
Net loss | $ (15,115,291) | $ (11,027,384)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Stock-based compensation expense | 2,172,279 | 2,062,285
Depreciation expense | 35,255 | 37,592
Loss (gain) on change in fair value of derivative liabilities | 106,403 | (1,896,861)
(Increase) decrease in: |  |
Prepaid expenses and other current assets | 826,824 | (119,262)
Increase (decrease) in: |  |
Accounts payable and accrued expenses-related party | 50,000 | 60,154
Accounts payable and accrued expenses | (590,295) | (94,775)
Net Cash Used In Operating Activities | (12,514,825) | (10,978,251)
Cash Flows From Investing Activities: |  |
Purchase of property and equipment | (16,710) | (41,474)
Payment for security deposit |  | (49,859)
Increase of restricted cash | (356,092) |
Net Cash Used In Investing Activities | (372,802) | (91,333)
Cash Flows From Financing Activities: |  |
Payments on note payable |  | (176,126)
Sales of common stock, net of offering costs | 3,824,605 | 6,057,685
Net Cash Provided By Financing Activities | 3,824,605 | 5,881,559
Net change in cash and cash equivalents | (9,063,022) | (5,188,025)
Cash and cash equivalents at beginning of period | 20,519,294 | 25,643,273
Cash and cash equivalents at end of period | 11,456,272 | 20,455,248
Supplemental disclosures of cash flow information: |  |
Cash paid for interest |  | 4,341
Cash paid for income taxes |  |
Supplemental disclosure of non-cash investing and financing activities: |  |
Transfer warrant derivatives from liability to equity classification |  | 17,455
Cashless exercise of warrants | $ 4 |

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