Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_27064 ( "Name of the war" text, "Ottoman sultan" text, "Persian shah" text, "Treaty at the end of the war" text, "Victor" text )

### Question ###
Who was the Ottoman Sultan where the treaty at the end of the war was the Treaty of Constantinople (1590)?

### Accurate SQL ###

SELECT "Ottoman sultan" FROM table_27064 WHERE "Treaty at the end of the war" = 'Treaty of Constantinople (1590)'