[sql-server-2008-r2] How to Convert datetime value to yyyymmddhhmmss in SQL server?

This query is to convert the DateTimeOffset into the format yyyyMMddhhss with Offset. I have replaced the hyphens, colon(:), period(.) from the data, and kept the hyphen for the seperation of Offset from the DateTime.

SELECT REPLACE(SUBSTRING(CONVERT(VARCHAR(33),SYSDATETIMEOFFSET(),126), 1, 8), '-', '') +
SUBSTRING(REPLACE(REPLACE(REPLACE(CONVERT(VARCHAR(33), SYSDATETIMEOFFSET(), 126),'T',''),'.',''),':',''),9,DATALENGTH(CONVERT(VARCHAR(33), SYSDATETIMEOFFSET(), 126)))