CREATE TABLE table_24706337_1 (ottoman_sultan VARCHAR(255), treaty_at_the_end_of_the_war VARCHAR(255))
Who was the Ottoman Sultan where the treaty at the end of the war was the Treaty of Constantinople (1590)?
    
SQL: SELECT ottoman_sultan FROM table_24706337_1 WHERE treaty_at_the_end_of_the_war = "Treaty of Constantinople (1590)"