In connection with the foregoing, we advise you that a member of the SEC's staff has advised us by telephone that the SEC has entered an order declaring the Registration Statement effective under the Securities Act at ​ ​ on ​, 201​ and we have no knowledge, after reviewing the list of stop orders on the SEC’s website, that any stop order suspending its effectiveness has been issued or that any proceedings for that purpose are pending before, or threatened by, the SEC and the Purchase Shares are available for resale under the Securities Act pursuant to the Registration Statement and may be issued without any restrictive legend.

In connection with the foregoing, we advise you that a member of the SEC’s staff has advised us by telephone that the SEC has entered an order declaring the Registration Statement effective under the Securities Act at ​ ​ on ​, 2022 and we have no knowledge, after telephonic inquiry of a member of the SEC’s staff, that any stop order suspending its effectiveness has been issued or that any proceedings for that purpose are pending before, or threatened by, the SEC and the Purchase Notice Shares are available for resale under the Securities Act pursuant to the Registration Statement and may be issued without any restrictive legend.

In connection with the foregoing, we advise you that a member of the SEC's staff has advised us by telephone that the SEC has entered an order declaring the Registration Statement effective under the Securities Act at ​ ​ on ​, 2021 and we have no knowledge, after telephonic inquiry of a member of the SEC's staff, that any stop order suspending its effectiveness has been issued or that any proceedings for that purpose are pending before, or threatened by, the SEC and the Put Shares are available for resale under the Securities Act pursuant to the Registration Statement and may be issued without any restrictive legend.

In connection with the foregoing, we advise you that a member of the SEC's staff has advised us by telephone that the SEC has entered an order declaring the Registration Statement effective under the Securities Act at ​ ​ on ​, 2017 and we have no knowledge, after telephonic inquiry of a member of the SEC's staff, that any stop order suspending its effectiveness has been issued or that any proceedings for that purpose are pending before, or threatened by, the SEC and the Put Shares and Commitment Shares are available for resale under the Securities Act pursuant to the Registration Statement and may be issued without any restrictive legend.

In connection with the foregoing, we advise you that a member of the SEC's staff has advised us by telephone that the SEC has entered an order declaring the Registration Statement effective under the Securities Act at ​ ​ on ​, 2016 and we have no knowledge, after telephonic inquiry of a member of the SEC's staff, that any stop order suspending its effectiveness has been issued or that any proceedings for that purpose are pending before, or threatened by, the SEC and the Put Shares and Commitment Shares are available for resale under the Securities Act pursuant to the Registration Statement and may be issued without any restrictive legend.

In connection with the foregoing, we advise you that a member of the SEC’s staff has advised us by telephone that the SEC has entered an order declaring the Registration Statement effective under the Securities Act at ​:​ am/pm on ​ ​, 2023, and we have no knowledge, based solely on our review of the Commission’s “Stop Orders” web page (http://sec.gov/litigation/stoporders.shtml), that any stop order suspending the Registration Statement’s effectiveness has been issued or that any proceedings for that purpose are pending before, or threatened by, the SEC, and the Purchase Shares and the Inducement Shares are available for resale under the Securities Act pursuant to the Registration Statement and may be issued without any restrictive legend.

In connection with the foregoing, we advise you that a member of the SEC’s staff has advised us by telephone that the SEC has entered an order declaring the Registration Statement effective under the Securities Act at ​ ​ on ​, 2022 and we have no knowledge, after telephonic inquiry of a member of the SEC’s staff, that any stop order suspending its effectiveness has been issued or that any proceedings for that purpose are pending before, or threatened by, the SEC and the Put Shares and Warrant Shares are available for resale under the Securities Act pursuant to the Registration Statement and may be issued without any restrictive legend.

In connection with the foregoing, we advise you that a member of the SEC's staff has advised us by telephone that the SEC has entered an order declaring the Registration Statement effective under the Securities Act at ​ ​ on ​, 2018 and we have no knowledge, after telephonic inquiry of a member of the SEC's staff, that any stop order suspending its effectiveness has been issued or that any proceedings for that purpose are pending before, or threatened by, the SEC and the Conversion Shares are available for resale under the Securities Act pursuant to the Registration Statement and may be issued without any restrictive legend.