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Common stock (Tables)
3 Months Ended
Mar. 31, 2023
Common stock  
Schedule of warrants outstanding

At March 31, 2023, common stock warrants outstanding were as follows:

Warrants

Warrants Outstanding

    

Exercise Price per Share

Expiration Date

Series A

803,112

$ 9.00

June 2, 2023

Series B

500,000

$ 10.00

April 28, 2024

1,303,112