Sql query getting error ....

hi

guys

i am getting error: ORA-00933: SQL command not properly ended
00933. 00000 -  "SQL command not properly ended"

here is query.kindly help

select RECEIPT_DATE from FILETRANS where filemaster.file_serial_no = FILETRANS.file_serial and filemaster.file_year=FILETRANS.file_year and filetrans.RECEIPT_DATE between trunc(sysdate-6)+(15/24) and least( trunc(sysdate)+(15/24), sysdate) and rownum=1) as ""Received Date""

thanks and regard love4csharp