restore a .bak file

I am currently using database ow1222
I want to restore a backup and call it ow1222b

RESTORE FILELISTONLY FROM DISK = 'd:\ow1222\ow1222aug16.bak'
d:\ow1222\ow.mdf
d:\ow1222\ow_log.ldf




RESTORE DATABASE ow1222b
   FROM DISK= 'd:\ow1222\ow1222aug16.bak'
   WITH MOVE 'ow' TO 'd:\ow1222\ow.mdf',
   MOVE 'ow_Log' TO 'd:\ow1222\ow_log.ldf'



Msg 1834, Level 16, State 1, Line 1
The file 'd:\ow1222\ow.mdf' cannot be overwritten.  It is being used by database 'ow1222'.
Msg 3156, Level 16, State 4, Line 1
File 'ow' cannot be restored to 'd:\ow1222\ow.mdf'. Use WITH MOVE to identify a valid location for the file.
Msg 1834, Level 16, State 1, Line 1
The file 'd:\ow1222\ow_log.ldf' cannot be overwritten.  It is being used by database 'ow1222'.
Msg 3156, Level 16, State 4, Line 1
File 'ow_log' cannot be restored to 'd:\ow1222\ow_log.ldf'. Use WITH MOVE to identify a valid location for the file.
Msg 3119, Level 16, State 1, Line 1
Problems were identified while planning for the RESTORE statement. Previous messages provide details.
Msg 3013, Level 16, State 1, Line 1
RESTORE DATABASE is terminating abnormally.