regexprep delete parenthesis in a sentence. not working

im trying to remove the bolded area. because of the () regexprep doesnt seem to find the sentance to remove. is there a work around for this so i can get rid of it all including the ()?

text file

{

Name = PTC_MATERIAL_SUB_TYPE

Type = String

Default = 'LINEAR'

Access = Locked

},

{

Name = PTC_THERMAL_CONDUCTIVITY

Type = Real

Default = NaN W/(m K)

Access = Full

},

{

Name = PTC_MASS_DENSITY

Type = Real

Default = 1.000000 lbm/in^3

Access = Full

fid = fopen('trial.txt', 'rt')  % Open source file.
       g= fscanf(fid,'%c')
  
expression7 = '\n{\n  Name = PTC_THERMAL_CONDUCTIVITY\n  Type = Real\n  Default =     NaN W/(m K)\n  Access = Full\n},\n{';
       replace7 = '';
       newStr7 = regexprep(g,expression7,replace7);

[dpb]

You're making this way too complicated...see the Answer I posted @

https://www.mathworks.com/matlabcentral/answers/1600659-delete-lines-in-txt-based-off-phrase?s_tid=srchtitle

Answer 1

[dpb]

It's short enough, I'll repost the working code from previous Answer again...

txt=textread('bogar.txt','%s','whitespace','','delimiter',newline); % read file a cellstr array
idxHdr=find(contains(txt,'{'));                                     % find the section headers
idxTrlr=find(contains(txt,'},'));                                   % and the closing trailers
idxNaN=find(contains(txt,'NaN'));                                   % then where the offending NaNs are
ixDel=flip(interp1(idxHdr,1:numel(idxHdr),idxNaN,'previous'));      % find sections containing NaN
for i=ixDel(:).'                                                    % iterate over sections
  txt(idxHdr(i):idxTrlr(i))=[];                                     % remove between header/trailer
end

NB: This version includes the refinement in the Comment earlier to search for the opening "{" instead of "Name" since the sections are not nested.