Conditional formating only on sum function not on =A1+A2
 

I am using "CellhasFormula=GET.CELL(48,INDIRECT("rc",FALS E))" to
conditionally format/colour the cells those have formula. Most of the
formulas are like
=sum(C1:C3) or =sum(AX21:AX34)
and =$C$3 (referening to other cell in same of other worksheets).

In the cells where user has to enter data; sometimes user enter the
data as C2=25+30 (with comments) instead of C2=55.

Now problem I am facing is that C2 is also recognised as formula and
conditional formatting is applied on it.

Can I do somehow that conditional formattiing is applied only on
functions like =SUM(B3:B6) or COUNT(B3:B6) not on '=25+30-2'

Anil