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Reserved for Future Issuance (Details) - shares | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Reserved for Future Issuance |  |
Number of shares reserved for future issuance | 13,447,779 | 10,076,610
Series X Preferred Stock |  |
Reserved for Future Issuance |  |
Number of shares reserved for future issuance | 5,184,591 | 5,242,501
Reserve under the 2015 Amended and Restated Stock Incentive Plan and the 2022 Inducement Stock Incentive Plan |  |
Reserved for Future Issuance |  |
Number of shares reserved for future issuance | 4,566,822 | 1,013,520
Options outstanding to purchase common stock |  |
Reserved for Future Issuance |  |
Number of shares reserved for future issuance | 3,321,448 | 2,253,431
Warrants for the purchase of common stock |  |
Reserved for Future Issuance |  |
Number of shares reserved for future issuance | 331,858 | 1,530,176
Shares reserved for the employee stock purchase plan |  |
Reserved for Future Issuance |  |
Number of shares reserved for future issuance | 43,060 | 36,982

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