Database Software

Im trying to create a externla table for comma delimited file
but it also has a scenario where Fields can have a Comma enclosed in "" for example

sample Record

1,one,first
2,two,second
3,three,third
4,four,"4,fourth"

Sample table

create table ext_table_csv (
  i   Number,
  n   Varchar2(20),
  m   Varchar2(20)
)
organization external (
  type              oracle_loader
  default directory ext_dir
  access parameters (
    records delimited  by newline
    fields  terminated by ','
    missing field values are null
  )
  location ('file.csv')
)
reject limit unlimited;

So when i query this Externla table 4th record will be read as

O/p

i           n 	                m
4         four	"4
{code}
Above Ext table is just an example, Im adding bad file and log file in real table.

Please help me if there is a way this can be resolved with external table.