RE: "(" ")" in xml file causing errors

I have an xml file which contains data like
<result><row>
<(expression)>3DO COMPANY</(expression)><(expression)>THDOQ</
(expression)><(expression)>95688</(expression)><(expression)>GVRC2 </
(expression)><(expression)>0.01300 / 0.04000(5000 x 5000)</
(expression)><(expression)> </(expression)><(expression)>02-11</(expression)>
</row> </result>

I am trying to use this xml to convert it to excel format(I have an xsl file
that converts xml to xls format).
When used directly it is giving an error "The content of elements must consist
of well-formed character data or markup." . I thought it could not because of
the "(". Do you think so?.

I want to get rid of braces( "(" and ")" from this xml and have another xml
with the same data without braces. I am trying to write xsl to do the same
but it is not working. Can someone please help.