Whsts the name of the student thst took prerequisite course  title internatoinal finance?
SELECT T1.name FROM student AS T1 JOIN takes AS T2 ON T1.id   =   T2.id WHERE T2.course_id IN  ( SELECT T4.prereq_id FROM course AS T3 JOIN prereq AS T4 ON T3.course_id   =   T4.course_id WHERE T3.title   =   'International Finance' ) 
student who took prerequisite course refers to JOIN between student and prereq tables through a course table; 'International Finance' is identified by title in course table;