TeXForm any string with replace it with setminus

When the code is TeXForm["[CapitalOmega]A"]
the output is double backslash instead of just one, how do I fix it so that it is just one, or preferably setminus ?
Keep in mind that it is in a String.
Or for example replacing "n" into "(newline)" it instead writes text{$backslash $n}