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Balance Sheets (Parenthetical) - $ / shares
Jun. 30, 2019
Dec. 31, 2018
Balance Sheets    
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, authorized (in shares) 150,000,000 150,000,000
Common stock, issued (in shares) 44,632,329 34,377,329
Common stock, outstanding (in shares) 44,632,329 34,377,329