SQL & PL/SQL

I have an external table defined as follows:

CREATE TABLE EXT_MASTER
   (	"SOME_CODE" VARCHAR2(255 BYTE), 
	"FAX_NUMBER" VARCHAR2(255 BYTE), 
	"WEB_ADDRESS" VARCHAR2(255 BYTE), 
   ) 
   ORGANIZATION EXTERNAL 
    ( TYPE ORACLE_LOADER
      DEFAULT DIRECTORY "SOME_DIR"
      ACCESS PARAMETERS
      ( RECORDS DELIMITED BY NEWLINE
          NODISCARDFILE
          LOGFILE 'master.log'
          BADFILE 'global.bad'
          SKIP 1
        FIELDS TERMINATED BY ',' 
          OPTIONALLY ENCLOSED BY '"'
          LRTRIM
          MISSING FIELD VALUES ARE NULL 
    )
      LOCATION
       ( 'Master.csv'
       )
    )
   REJECT LIMIT UNLIMITED;

In my datafile I have newline characters within double quotes. This seems to be illegal using the above definition for the table.

Is there a way to make Oracle ignore newline characters in csv files when they are enclosed in double quotes? Or should I ask my data provider to remove them?