Regular expression to split comma separated values

with test as
(select '5/10/2007,36352737,,"first_name, last_name Jr.",211001,7204,-75.00' str from dual)
Select regexp_substr(str,'".*"|[^,]+', 1, level)
from test
connect by regexp_substr(str,'".*"|[^,]+', 1, level) is not null